Tag: 300-400

Category: alcohols-buliding-blocks《Study of differences among different prune varieties and producing areas in prune aroma components》 was published in 2021. The authors were Zhang, Ding-jie;Hu, Chao;Zhu, Yuan-yang;Yang, Long-yan;Hu, Zhi-zhong;Song, Ling-yong;Liang, Miao;Zhang, Jun-song, and the article was included in《Shipin Yanjiu Yu Kaifa》. The author mentioned the following in the article:

To study differences in aroma contributing components among different prune varieties, four prune variants from different growing locations were used as the research object. Simultaneous distillation and extraction followed by gas chromatog.-mass spectrometry (GC-MS) were used to chem. assess their aromas. Aroma contributory components were identified and analyzed, and differences in the aroma contributing components among the different prune varieties and producing areas were compared via principal component anal. and cluster anal. The prune aroma components from different varieties and origins include aldehydes, acids, alcs., ketones, esters, olefins, phenols and nitrogen-containing heterocyclic compounds, among which, aldehydes were the most highly represented. Striking differences were observed in characteristic aroma component contents. Principal component and cluster analyses showed that variety impacts differences in prune aroma components relatively strongly. And 2,2-Methylenebis(6-tert-butyl-p-cresol) (cas: 119-47-1) was used in the research process.

Category: alcohols-buliding-blocks2,2′-Methylenebis(4-methyl-6-tert-butylphenol)(CAS: 119-47-1) is a natural product found in Streptomyces and Aspergillus fumigatus .

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Liu, Chenlong;Chen, Dong;Cao, Yongan;Zhang, Tianxi;Mao, Yangyang;Wang, Wenju;Wang, Zhigang;Kawi, Sibudjing published 《Catalytic steam reforming of in-situ tar from rice husk over MCM-41 supported LaNiO₃ to produce hydrogen rich syngas》 in 2020. The article was appeared in 《Renewable Energy》. They have made some progress in their research.COA of Formula: C23H32O2 The article mentions the following:

In this paper, a series of catalysts loaded with different amount of LaNiO₃ on MCM-41 supported were studied for steam reforming of biomass tar reaction using in-situ tar in double fixed-bed. Different methods including XRD, N₂ adsorption-desorption, SEM, XPS and TG-DTG were employed for characterization of fresh and spent catalysts. The results of low-angle XRD and N₂-adsorption-desorption anal. shown that MCM-41 supported was successfully synthesized. In the first-stage fixed-bed, in-situ tar was produced by pyrolysis of rice husk at 450°C. Simultaneously, the LaNiO₃ and XLaNiO₃/MCM-41 (X = 0.025, 0.05, 0.075 and 0.1) catalysts were investigated for hydrogen rich syngas production at various reforming temperature (500°C-900°C) and steam/carbon mass ratio (S/C = 0.6-1) in second-stage fixed-bed. At the same conditions after five-time cycles, 0.1LaNiO₃/MCM-41 showed a stable hydrogen gas composition of around 50%, and 0.1LaNiO₃/MCM-41 catalyst was effective in catalysis of phenol compound in in-situ tar by GC-MS results. TGA-DTG and Raman anal. revealed the carbon deposition was mostly amorphous on 0.1LaNiO₃/MCM-41, and lattice oxygen released to remove deposited carbon was the possible reason for 0.1LaNiO₃/MCM-41 catalyst’s stable catalytic performance by XPS results. The experimental procedure involved many compounds, such as 2,2-Methylenebis(6-tert-butyl-p-cresol) (cas: 119-47-1) .

COA of Formula: C23H32O22,2′-Methylenebis(4-methyl-6-tert-butylphenol)(CAS: 119-47-1) is a natural product found in Streptomyces and Aspergillus fumigatus .

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Recommanded Product: 119-47-1《Preparation of a Coal-Based MoS₂/SiO₂/GO Composite Catalyst and Its Performance in the Photocatalytic Degradation of Wastewater and Hydrogen Production》 was published in 2022. The authors were Sun, Jinyan;Maimaiti, Halidan;Zhai, Peishuai;Zhang, Haizheng;Feng, Lirong;Bao, Jianzhao;Zhao, Xuwei, and the article was included in《Langmuir》. The author mentioned the following in the article:

Photocatalytic degradation of wastewater and the simultaneous production of hydrogen (H₂) is a green and efficient method to solve energy and environmental problems. In this paper, coal-based SiO₂/GO with a stable structure was prepared by a modified Hummers oxidation method, and then, a lotus-shaped composite photocatalyst, MoS₂/SiO₂/GO, was prepared by in situ loading of flower cluster MoS₂ from sodium molybdate reduction onto SiO₂/GO. Its photocatalytic degradation of wastewater and H₂ production properties were investigated while characterizing the material structure. The results show that SiO₂/GO as a carrier not only ensures adequate dispersion of MoS₂ but also enhances the visible-light response of the composite catalyst. In addition, it can also hinder the recombination of photogenerated electrons and holes in MoS₂ and act as an electron transport channel in composite catalysts. MoS₂/SiO₂/GO exhibits much higher photocatalytic degradation of wastewater and H₂ production capacity than MoS₂: after 180 min of reaction, the CODcr removal of wastewater increased from 45.6% for MoS₂ to 84.2% for MoS₂/SiO₂/GO and the H₂ yield reached 233.4μmol. The goal of degrading wastewater while producing H₂ more economically has been tentatively achieved, although not to the extent required for industrialization. The experimental procedure involved many compounds, such as 2,2-Methylenebis(6-tert-butyl-p-cresol) (cas: 119-47-1) .

Recommanded Product: 119-47-12,2′-Methylenebis(4-methyl-6-tert-butylphenol)(CAS: 119-47-1) is a natural product found in Streptomyces and Aspergillus fumigatus .

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Lowe, Charles N.;Phillips, Katherine A.;Favela, Kristin A.;Yau, Alice Y.;Wambaugh, John F.;Sobus, Jon R.;Williams, Antony J.;Pfirrman, Ashley J.;Isaacs, Kristin K. published 《Chemical Characterization of Recycled Consumer Products Using Suspect Screening Analysis》 in 2021. The article was appeared in 《Environmental Science & Technology》. They have made some progress in their research.SDS of cas: 119-47-1 The article mentions the following:

Recycled materials are found in many consumer products as part of a circular economy; however, the chem. content of recycled products is generally uncharacterized. A suspect screening anal. using two-dimensional gas chromatog. time-of-flight mass spectrometry (GC x GC-TOFMS) was applied to 210 products (154 recycled, 56 virgin) across seven categories. Chems. in products were tentatively identified using a standard spectral library or confirmed using chem. standards A total of 918 probable chem. structures identified (112 of which were confirmed) in recycled materials vs. 587 (110 confirmed) in virgin materials. Identified chems. were characterized in terms of their functional use and structural class. Recycled paper products and construction materials contained greater numbers of chems. than virgin products; 733 identified chems. had greater occurrence in recycled compared to virgin materials. Products made from recycled materials contained greater numbers of fragrances, flame retardants, solvents, biocides, and dyes. The results were clustered to identify groups of chems. potentially associated with unique chem. sources, and identified chems. were prioritized for further study using high-throughput hazard and exposure information. While occurrence is not necessarily indicative of risk, these results can be used to inform the expansion of existing models or identify exposure pathways currently neglected in exposure assessments. The experimental procedure involved many compounds, such as 2,2-Methylenebis(6-tert-butyl-p-cresol) (cas: 119-47-1) .

SDS of cas: 119-47-12,2′-Methylenebis(4-methyl-6-tert-butylphenol)(CAS: 119-47-1) is a natural product found in Streptomyces and Aspergillus fumigatus .

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Name: 2,2-Methylenebis(6-tert-butyl-p-cresol)In 2021, Olker, Jennifer H.;Korte, Joseph J.;Denny, Jeffrey S.;Haselman, Jonathan T.;Hartig, Phillip C.;Cardon, Mary C.;Hornung, Michael W.;Degitz, Sigmund J. published 《In vitro screening for chemical inhibition of the iodide recycling enzyme, iodotyrosine deiodinase》. 《Toxicology In Vitro》published the findings. The article contains the following contents:

The iodide recycling enzyme, iodotyrosine deiodinase (IYD), is a largely unstudied mol. mechanism through which environmental chems. can potentially cause thyroid disruption. This highly conserved enzyme plays an essential role in maintaining adequate levels of free iodide for thyroid hormone synthesis. Thyroid disruption following in vivo IYD inhibition has been documented in mammalian and amphibian models; however, few chems. have been tested for IYD inhibition in either in vivo or in vitro assays. Presented here are the development and application of a screening assay to assess susceptibility of IYD to chem. inhibition. With recombinant human IYD enzyme, a 96-well plate in vitro assay was developed and then used to screen over 1800 unique substances from the U. S. EPA ToxCast screening library. Through a tiered screening approach, 194 IYD inhibitors were identified (inhibited IYD enzyme activity by 20% or greater at target concentration of 200μM). 154 chems. were further tested in concentration-response (0.032-200μM) to determine IC50 and rank-order potency. This work broadens the coverage of thyroid-relevant mol. targets for chem. screening, provides the largest set of chems. tested for IYD inhibition, and aids in prioritizing chems. for targeted in vivo testing to evaluate thyroid-related adverse outcomes. The experimental procedure involved many compounds, such as 2,2-Methylenebis(6-tert-butyl-p-cresol) (cas: 119-47-1) .

Name: 2,2-Methylenebis(6-tert-butyl-p-cresol)2,2′-Methylenebis(4-methyl-6-tert-butylphenol)(CAS: 119-47-1) is a natural product found in Streptomyces and Aspergillus fumigatus .

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COA of Formula: C23H32O2In 2021, Pontoni, Ludovico;Roviello, Valentina;Race, Marco;Savignano, Luigi;van Hullebusch, Eric D.;Esposito, Giovanni;Pirozzi, Francesco;Fabbricino, Massimiliano published 《Supramolecular aggregation of colloidal natural organic matter masks priority pollutants released in water from peat soil》. 《Environmental Research》published the findings. The article contains the following contents:

Natural organic matter (NOM) from Sphagnum peat soil is extracted in water and subjected to several investigations to obtain structural and conformational information. Data show that the extracted NOM is self-organized in colloidal aggregates of variable sizes (from nano to micro scales, depending on the solvent composition, i.e., ultrapure water, solutions with denaturing agents, acetone, ethanol). Aggregates are formed by highly heterogeneous classes of organic compounds According to the results of NMR and fluorescence measurements, the three-dimensional structure of aggregates, revealed by scanning electron microscope imaging, is supposed to be stabilized by the exposition of polar functional groups to the solvent, with consequent formation of hydrogen bonds, dipole-interactions and cation bridging. In contrast, the inner part of the aggregates displays hydrophobic features and is hypothesized to be further reinforced by the establishment of π-stacking interactions. The structure is assumed to be a supramol. aggregation of small-medium oligomeric fragments (Max 750 Da) in which priority pollutants are entrapped by dispersive forces. The structures are shown to be nanosized spheroidal particles further aggregated to form higher dimension supra-structures. Carbohydrates play primary role, stabilizing the structure and giving marked hydrophilic properties to the aggregates. And 2,2-Methylenebis(6-tert-butyl-p-cresol) (cas: 119-47-1) was used in the research process.

COA of Formula: C23H32O22,2′-Methylenebis(4-methyl-6-tert-butylphenol)(CAS: 119-47-1) is a natural product found in Streptomyces and Aspergillus fumigatus .

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HPLC of Formula: 119-47-1《The High Complexity of Plastic Additives in Hand Wipes》 was published in 2021. The authors were Chen, Yukun;Shi, Yumeng;Liu, Xiaotu;Liu, Runzeng;Chen, Da, and the article was included in《Environmental Science & Technology Letters》. The author mentioned the following in the article:

Extensive and long-term applications have resulted in global distributions of plastic additives (PAs). To facilitate the understanding of human exposure to PAs, the present study investigated the abundances and profiles of a broad range of PAs on human hands via hand wipe sampling. Sixty out of 160 PAs were detected in >50% of hand wipes collected from 30 children and 45 adults, among which a number of organophosphate esters (OPEs) and synthetic antioxidants that have rarely or never been investigated in prior studies. The total masses of PAs ranged from 650 to 87 030 ng (median: 6110 ng) and 1230 to 19360 ng (median: 5600 ng) in adults′ and children′s hand wipes, resp. By categories, phthalates (PAEs) represented the most abundant group of PAs, followed by non-PAE plasticizers, UV stabilizers, OPEs, antioxidants, and bisphenol analogs. Children exhibited greater PA levels per square centimeter of hand surface, indicating elevated exposure compared with adults. Strong correlations existed for many PAs between adults and children or within each subpopulation, indicating close connections between the two subpopulations in the exposure profiles. The great complexity of plastic additives on hands raises the need for future investigations on human exposure pathways and potential health risks from the “cocktail” effects. The experimental procedure involved many compounds, such as 2,2-Methylenebis(6-tert-butyl-p-cresol) (cas: 119-47-1) .

HPLC of Formula: 119-47-12,2′-Methylenebis(4-methyl-6-tert-butylphenol)(CAS: 119-47-1) is a natural product found in Streptomyces and Aspergillus fumigatus .

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Seyidoglu, Tijen;Bohn, Manfred A. published 《Effects of four isocyanates and four plasticizers on the thermomechanical and tensile properties of hydroxyl-terminated polybutadiene elastomers and the effect of solid particle filling》. The research results were published in《Journal of Applied Polymer Science》 in 2021.Name: 2,2-Methylenebis(6-tert-butyl-p-cresol) The article conveys some information:

The aim of this study is to analyze effect of four different isocyanates and four different plasticizers in hydroxyl-terminated polybutadiene (HTPB) based elastomers by quant. anal. of the shape of the loss factor (tan δ), tensile strength, deformation frequency shift of the maximum temperatures of loss moduli G” and of tan δ. The first part of the study shows intensities of the tan δ curves with the four isocyanates follow the order HDI > IPDI > H12MDI > Desmodur E305. By mol. modeling of the isocyanates and the corresponding polyurethane parts the influence of mol. geometry on tan δ are discussed. The second part of the study analyzes HTPB-IPDI elastomers with the four different plasticizers DOA, DOS, DOZ, and IDP. The IDP provides lowest T_g at about -83°C, while the others provide at about -78°C. In the third part, aluminum (Al-18μm) and ammonium perchlorate (AP-200μm) are added to HTPB-IPDI+DOA to analyze the effect of particle size, wt% content and particle type on the shape and intensity of the tan δ curves. From the frequency shift of the two maximum temperatures one receives activation energies Eaf. Their average values without and with plasticizer are with tan δ 178 and 165 kJ/mol and with G” 274 and 248 kJ/mol, resp. To complete the study, the researchers used 2,2-Methylenebis(6-tert-butyl-p-cresol) (cas: 119-47-1) .

Name: 2,2-Methylenebis(6-tert-butyl-p-cresol)2,2′-Methylenebis(4-methyl-6-tert-butylphenol)(CAS: 119-47-1) is a natural product found in Streptomyces and Aspergillus fumigatus .

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Related Products of 119-47-1In 2022, Shi, Jinyu;Sun, Dezhi;Dang, Yan;Qu, Dan published 《Characterizing the degradation of refractory organics from incineration leachate membrane concentrate by VUV/O₃》. 《Chemical Engineering Journal (Amsterdam, Netherlands)》published the findings. The article contains the following contents:

In this study, we used a combined vacuum-UV (VUV) and O₃ process treating the chem. precipitation pre-treated incineration leachate membrane concentrate to further decompose substantial refractory organics which led to membrane organic fouling in the subsequent membrane distillation process. The highest removal of COD (88.1%) was achieved when 50 mg/min of O₃ dosage was used at a pH of 11.5-12. Multi-spectrum methods, mol. weight distribution (MW), gas chromatog.-mass spectrometry (GC-MS), two-dimensional correlation spectroscopy (2D-COS), and hetero-spectral 2D-COS were used to investigate the organics degradation mechanism. The combined action of O₃ and hydroxyl radicals (·OH) effectively degraded macromol. organics with high aromaticity and high conjugation (mainly distributed at 1-3 kDa) into aliphatic products with lower mol. weight (<1 kDa) and simple structures. The order of organics that were oxidized were humic-like acids > fulvic-like acids > protein-like substances. Organic acids (acetate, propionate, and butyrate) also accumulated in the VUV/O₃ systems. And 2,2-Methylenebis(6-tert-butyl-p-cresol) (cas: 119-47-1) was used in the research process.

Related Products of 119-47-12,2′-Methylenebis(4-methyl-6-tert-butylphenol)(CAS: 119-47-1) is a natural product found in Streptomyces and Aspergillus fumigatus .

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Jiang, Qian;Liu, He;Zhang, Yan;Cui, Min-hua;Fu, Bo;Liu, Hong-bo published 《Insight into sludge anaerobic digestion with granular activated carbon addition: Methanogenic acceleration and methane reduction relief》. The research results were published in《Bioresource Technology》 in 2021.Product Details of 119-47-1 The article conveys some information:

In this study, the multiple effects of granular activated carbon (GAC) on sludge anaerobic digestion at ambient (16-24°C), mesophilic (35°C) and thermophilic (55°C) temperature were investigated. After GAC addition, although the methane yields of raw sludge were reduced by 6.5%-36.9%, the lag phases of methanogenesis were shortened by 19.3%-30.6% and the reductions of methane yields were declined to only 5.9%-8.1% simultaneously for pretreated sludge. The inhibitory substances like phenols that generated by thermal pretreatment were reduced after GAC addition, which were demonstrated to be responsible for the methanogenic acceleration. Meanwhile, the methane reduction due to the non-selective adsorption by GAC could be mitigated by pretreatment and elevated temperature Thus, a strategy coupling thermal pretreatment with detoxification by GAC was proposed to improve the methane production rate and avoid the neg. effects during sludge anaerobic digestion with GAC addition2,2-Methylenebis(6-tert-butyl-p-cresol) (cas: 119-47-1) were involved in the experimental procedure.

Product Details of 119-47-12,2′-Methylenebis(4-methyl-6-tert-butylphenol)(CAS: 119-47-1) is a natural product found in Streptomyces and Aspergillus fumigatus .

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