Category: 104-76-7

Nezam, Iman; Peereboom, Lars; Miller, Dennis J. published the artcile< Continuous condensed-phase ethanol conversion to higher alcohols: Experimental results and techno-economic analysis>, Name: 2-Ethylhexan-1-ol, the main research area is alumina supported nickel lanthanum oxide catalyst; ethanol conversion higher alc technoeconomic analysis.

The conversion of ethanol to n-butanol and higher alcs. is carried out in a continuous fixed bed reactor over a Ni/La2O3/γ-Al2O3 catalyst at 210-250°C and 100 bar. At these conditions, the reaction mixture is a condensed, near-critical phase that facilitates higher reaction rates than corresponding vapor phase reactions. Combined selectivity to n-butanol and C6+ higher alcs. reached 74% at 41% ethanol conversion. A process concept is presented in which n-butanol and mixed C6+ alcs. are produced as saleable products; ethanol is recycled to achieve nearly 100% overall conversion and minor byproducts are burned to provide process energy. A process design is conducted using aspen plus V8.4 process simulation software and economic analyses are carried out for several cases of ethanol conversion and alcs. selectivities. Several addnl. cases involving permutations of the base process configuration are also examined in attempts to improve process economics. At n-butanol selectivities achieved exptl., a facility producing 75 million kg n-butanol per yr has a total capital cost of 8.1 million with a required n-butanol selling price of .55/kg to .60/kg for typical values of expected return on investment.

Journal of Cleaner Production published new progress about Aliphatic alcohols Role: IMF (Industrial Manufacture), PREP (Preparation). 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, Name: 2-Ethylhexan-1-ol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Nataraj, Bojan; Maharajan, Kannan; Hemalatha, Devan; Rangasamy, Basuvannan; Arul, Narayanasamy; Ramesh, Mathan published the artcile< Comparative toxicity of UV-filter Octyl methoxycinnamate and its photoproducts on zebrafish development>, HPLC of Formula: 104-76-7, the main research area is toxicity UV Octyl methoxycinnamate photoproduct zebrafish development; Antioxidants; Embryotoxicity; Histopathology; Photoproducts; UV filter; Zebrafish.

In the present study, we explored the adverse effects of Octyl methoxycinnamate (OMC), and its photoproducts, namely 2-ethylhexanol (2-EH) and 4-methoxybenzaldehyde (4-MBA) on the developmental stages of zebrafish using various biomarkers such as developmental toxicity, oxidative stress, antioxidant response, neurotoxicity and histopathol. changes. The 96 h effective concentrations (EC50) of OMC, 2-EH and 4-MBA were found to be 64.0, 34.0 and 3.5μg/mL, resp. in the embryo toxicity test. Embryos exposed to the EC50 of OMC, 2-EH and 4-MBA showed time-dependent increases in the malformation, heart rate and hatching delay. The lipid peroxidation (LPO) level was significantly (p < 0.05) increased and both induction and inhibition of SOD, CAT, GPx and GST activities were observed in the zebrafish embryos exposed to OMC, 2-EH and 4-MBA. GSH activity was significantly (p < 0.05) decreased in the highest exposure groups, when compared with the control. AChE activity was increased in lower concentrations of OMC, 2-EH and 4-MBA exposed embryos whereas, the activity was found to be decreased in highest concentration Moreover, the histopathol. studies showed severe damage to the muscle fibers and yolk sac regions of the larvae with 4-MBA treatment. The photoproduct 4-MBA has the highest toxic effect, followed by 2-EH and OMC. Our results provide useful insights into the impacts of OMC and its photoproducts on zebrafish development. Science of the Total Environment published new progress about Danio rerio. 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, HPLC of Formula: 104-76-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Rios, Italo C.; Cordeiro, Joao P.; Arruda, Tathilene B. M. G.; Rodrigues, F. Eduardo A.; Uchoa, Antonia F. J.; Luna, F. Murilo T.; Cavalcante, Celio L. Jr; Ricardo, Nagila M. P. S. published the artcile< Chemical modification of castor oil fatty acids (Ricinus communis) for biolubricant applications: An alternative for Brazil's green market>, Electric Literature of 104-76-7, the main research area is Ricinus castor oil fatty toluenesulfonic acid biolubricant.

Plants oils have been increasingly gaining acceptance in world markets, due to their great potential as raw material to replace conventional mineral oils for formulation of lubricants. In this study, samples of new potential bio-based lubricant mols. were synthesized from castor oil fatty acids. The synthesis occurred in three steps: esterification with 2-ethyl-1-hexanol, epoxidation and opening of oxirane rings with different nucleophilic agents: 1-butanol (BIOBUT) and water (BIOWAT). The main objective was to study the influence of hydroxyl groups and branching level on physicochem. properties and thermal degradation of samples. The products obtained in each step were characterized by 1H NMR and their physicochem. properties. The results indicated that the less polar samples (BIOBUT) exhibited a better low-temperature performance (PP -48°C). Furthermore, BIOBUT has superior oxidation stability (IP 4.22 h) compared to BIOWAT (IP 3.27 h). However, the BIOWAT showed a higher viscosity values (> 470 mm2/s at 40°C). Thermogravimetric analyses have indicated that BIOWAT shows better thermal stability. Finally, the activation energy determined for the first thermal event for BIOWAT (151 kJ.mol-1) was higher than BIOBUT.

Industrial Crops and Products published new progress about Activation energy. 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, Electric Literature of 104-76-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Wei, Shouhui; Xiao, Xuemei; Wei, Lijuan; Li, Lushan; Li, Guichen; Liu, Fanhong; Xie, Jianming; Yu, Jihua; Zhong, Yuan published the artcile< Development and comprehensive HS-SPME/GC-MS analysis optimization, comparison, and evaluation of different cabbage cultivars (Brassica oleracea L. var. capitata L.) volatile components>, Safety of 2-Ethylhexan-1-ol, the main research area is Brassica volatile compound flavor HS SPME GCMS; Cabbage cultivars; HCA; HS-SPME/GC–MS; OAVs; PCA; RFC; Volatile compounds.

Seven parameters of the headspace solid phase micro-extraction (HS-SPME) for extracting volatile compounds from cabbage were optimized comprehensively for the first time. A total of 75 volatiles were identified and quantified in 10 cabbage cultivars, mainly including aldehydes, hydrocarbons, esters, isothiocyanates, alcs., ethers, nitriles and thiazoles. Di-Me ether was the most abundant volatile. There were 24 volatiles with the odor activity values (OAVs) greater than 1 making large contributions to the cabbage flavor. Pungent aroma was the strongest odor, followed by green and fruity aromas. In short, the overall OAV of purple cabbages were generally higher than that of green cabbage. The volatile profile of 10 cabbage cultivars could be distinguished on the basis of radar fingerprint chart (RFC), hierarchical cluster anal. (HCA) and principal component anal. (PCA). Therefore, this study not only developed a feasible method to distinguish different cabbage cultivars, but also established a theor. basis for the genetic improvement of cabbage flavor.

Food Chemistry published new progress about Alcohols Role: ANT (Analyte), ANST (Analytical Study). 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, Safety of 2-Ethylhexan-1-ol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Giorello, Facundo; Valera, Maria Jose; Martin, Valentina; Parada, Andres; Salzman, Valentina; Camesasca, Laura; Farina, Laura; Boido, Eduardo; Medina, Karina; Dellacassa, Eduardo; Berna, Luisa; Aguilar, Pablo S.; Mas, Albert; Gaggero, Carina; Carrau, Francisco published the artcile< Genomic and transcriptomic basis of Hanseniaspora vineae's impact on flavor diversity and wine quality>, COA of Formula: C8H18O, the main research area is Hanseniaspora exometabolome genomics transcriptomics flavor diversity wine quality; Illumina; flavor compounds; genome; metabolome; transcriptome; wine aroma.

Hanseniaspora is the main genus of the apiculate yeast group that represents approx. 70% of the grape-associated microflora. Hanseniaspora vineae is emerging as a promising species for quality wine production compared to other non-Saccharomyces species. Wines produced by H. vineae with Saccharomyces cerevisiaeconsistently exhibit more intense fruity flavors and complexity than wines produced by S. cerevisiae alone. In this work, genome sequencing, assembling, and phylogenetic anal. of two strains of H. vineae showed that it is a member of the Saccharomyces complex and it diverged before the whole-genome duplication (WGD) event from this clade. Specific flavor gene duplications and absences were identified in the H. vineae genome compared to 14 fully sequenced industrial S. cerevisiae genomes. The increased formation of 2-phenylethyl acetate and phenylpropanoids such as 2-phenylethyl and benzyl alcs. might be explained by gene duplications of H. vineae aromatic amino acid aminotransferases (ARO8 and ARO9) and phenylpyruvate decarboxylases (ARO10). The identification of six proteins, different from S. cerevisiae ATF, with diverse acetyltransferase domains in H. vineae offers a relevant source of native genetic variants for this enzymic activity. The discovery of benzenoid synthesis capacity in H. vineae provides a new eukaryotic model to dilucidate an alternative pathway to that catalyzed by plants’ phenylalanine lyases.

Applied and Environmental Microbiology published new progress about Alcohols Role: ANT (Analyte), BSU (Biological Study, Unclassified), ANST (Analytical Study), BIOL (Biological Study). 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, COA of Formula: C8H18O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Kim, Heejin; Kim, Taehoon; Choi, Nakyung; Kim, Byung Hee; Oh, Se-Wook; Kim, In-Hwan published the artcile< Synthesis of diethylhexyl adipate by Candida antarctica lipase-catalyzed esterification>, Electric Literature of 104-76-7, the main research area is diethylhexyl adipate esterification immobilization Candida antarctica lipase.

Diethylhexyl adipate (DEHA) has been used for various applications in the chem. industry. In particular, DEHA is used as a plasticizer for polyvinyl chloride and its polymers. In this study, DEHA was successfully synthesized via lipase-catalyzed esterification from adipic acid with ethylhexanol in a solvent-free system. An immobilized lipase from Candida antarctica (Novozym 435) was used as a biocatalyst in this reaction. The optimal reaction conditions for the synthesis of DEHA were temperature of 50°C, an enzyme loading of 5% (based on the total weight of substrate), a vacuum of 6.7 kPa, and a molar ratio 1:2.5 (adipic acid to ethylhexanol). When vacuum was applied, the conversion to DEHA was improved significantly and 100 mol% conversion was obtained within only 3 h under optimal condition.

Process Biochemistry (Oxford, United Kingdom) published new progress about Optimization. 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, Electric Literature of 104-76-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

da Silva, Mateus V. C.; Souza, Amanda B.; de Castro, Heizir F.; Aguiar, Leandro G.; de Oliveira, Pedro C.; de Freitas, Larissa published the artcile< Synthesis of 2-ethylhexyl oleate catalyzed by Candida antarctica lipase immobilized on a magnetic polymer support in continuous flow>, Reference of 104-76-7, the main research area is ethylhexyl oleate Candida antarctica lipase immobilization; Esterification; Immobilized lipase; Kinetic modeling; Magnetic polymer; Packed-bed reactor.

This study investigated the synthesis of 2-ethylhexyl oleate catalyzed by Candida antarctica lipase immobilized on magnetic poly(styrene-co-divinylbenzene) particles in a continuous packed-bed bioreactor. Runs were carried out in a solvent-free system at 50°C. The performance of the reactor was evaluated for substrates composed by oleic acid and 2-ethylhexanol at five molar ratios (1:4-4:1), determining its operation limits in terms of substrate flow rate. The system performance was quantified for three different flow rates corresponding to space-time between 3 and 12 h. For each condition, the influence of the space-time in the ester formation, esterification yield and productivity was determined The molar ratio of acid-to-alc. interfered, in a remarkable way, in the formation of 2-ethylhexyl oleate and the best performance was attained for substrate at equimolar ratio running at 12 h space-time. Under this condition, average 2-ethylhexyl oleate concentration was 471.65 ± 2.98 g L-1 which corresponded to ester productivity of 23.16 ± 0.49 mmol g-1 L-1 h-1. This strategy also gave high biocatalyst operational stability, revealing a half-life time of 2063 h. A model based on the ping-pong Bi-Bi mechanism was developed to describe the kinetics of the esterification reaction and validated using exptl. data. The goodness of fit of the model was satisfactory (R2 = 0.9310-0.9952).

Bioprocess and Biosystems Engineering published new progress about Growth, microbial. 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, Reference of 104-76-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Ubeda, Cristina; Kania-Zelada, Ingeborg; del Barrio-Galan, Ruben; Medel-Maraboli, Marcela; Gil, Mariona; Pena-Neira, Alvaro published the artcile< Study of the changes in volatile compounds, aroma and sensory attributes during the production process of sparkling wine by traditional method>, Application In Synthesis of 104-76-7, the main research area is sparkling wine aroma sensory property volatile compound; Aging; Impact aroma compounds; Olfactometry; País grape variety; Sensory analysis; Volatile compounds; sparkling wine.

One of the strongest factors that affects the volatile profile of sparkling wine is the winemaking process. Here we focus on determining the effects of the second fermentation and aging on lees of sparkling wine from Pais grape variety combining different anal. techniques for the first time in sparkling wine: gas chromatog./mass spectrometry/olfactometry and sensorial anal. During the second fermentation and aging, there was a significant loss of esters that might be related to the adsorption on lees and ester volatility and chem. hydrolysis. The concentration of several compounds such as some esters (di-Et succinate, Et lactate, and Et isovalerate) increased during aging and could be used as aging markers. Vitispiranes were identified as the best norisoprenoids aging markers for young sparkling wines (12 mo of aging). Also, PCA showed that time of aging on lees affected mostly esters and terpenes. On the other hand, the diminution of fruity/floral impact odorants during aging was not perceived in sensorial trials. Our results suggest that the responsibility for fruity/floral nuances in sparkling wine might reside in a few high-impact aromatic compounds, such as Et isobutyrate, isoamyl acetate, Et hexanoate, β-phenylethanol and di-Et succinate.

Food Research International published new progress about Acids Role: BSU (Biological Study, Unclassified), PUR (Purification or Recovery), BIOL (Biological Study), PREP (Preparation). 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, Application In Synthesis of 104-76-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Han, Mai; Han, Yuanyuan; Yan, Houchun; Gui, Huanhuan; Sun, Weizhen; Li, Qingsong published the artcile< Liquid-liquid equilibrium for ternary systems of 2,2,2-trifluoroethanol, water and different extractants at 303.2 K>, Category: alcohols-buliding-blocks, the main research area is extractant liquid equilibrium ternary system separation.

2,2,2-Trifluoroethanol (TFE) is used more and more widely in industry, but there are few reports on its separation at present. The purpose of this work is to explore the feasibility of separating 2,2,2-trifluoroethanol from aqueous solution using different extractants, as isopentanol, 2-Ethyl-1-hexanol, n-Pr acetate, and dichloromethane. The liquid-liquid equilibrium data of TFE + water +{isopentanol or 2-ethyl-1-hexanol or Pr acetate or dichloromethane} at standard pressure and 303.2 K were measured. The estimated partition coefficient (D) and separation factor (S) of TFE are higher than 1. Meanwhile, Othmer-Tobias and Hand’s empirical equations verified the exptl. data’s consistency, and the squares of its linear correlation are all greater than 0.99. The NRTL and UNIQUAC activity coefficient models were used to correlate the exptl. data, and different model parameters were obtained by regression. After comparing the calculated values of the model with the exptl. data, it was found that the root means square deviation (RMSD%) was less than 0.34%, which indicate that both models have a reasonable correlation with the exptl. data of the ternary system and can accurately predict the exptl. data.

Journal of Chemical Thermodynamics published new progress about Equilibrium. 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, Category: alcohols-buliding-blocks.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Tarin, Mojtaba; Moghadam, Seyed M. M.; Salehi, Samie; Fateh, Davod S. published the artcile< Dual catalytic activity of amberlyst-15 in the large-scale and sustainable synthesis of dioctyl sodium sulfosuccinate (DOSS)>, Computed Properties of 104-76-7, the main research area is amberlyst catalyst dioctyl sodium sulfosuccinate surfactant synthesis.

Dioctyl sodium sulfosuccinate (DOSS) as a unique material both as a drug and surfactant was synthesized by a facile and economical synthetic method. In this project, Amberlyst-15 was selected as a heterogeneous recyclable bronsted solid acid for this synthesis both in the esterification of maleic anhydride and sulfonation of dioctyl maleate (DOM) ester. This catalyst was easily recovered and reused at least for 13 consecutive cycles without a significant loss in the catalytic activity. In this paper, we wish to uncover a catalytic approach for the synthesis of DOSS through a recyclable, easily recoverable, and com. available catalyst, namely Amberlyst 15, under mild conditions.

Letters in Organic Chemistry published new progress about Esterification. 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, Computed Properties of 104-76-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts