Kurnia, Irwan published the artcileSynthesis of p-menthane-3,8-diol from citronellal over lignin-derived carbon acid catalysts, Safety of 2-(2-Hydroxypropan-2-yl)-5-methylcyclohexanol, the main research area is menthanediol citronellal lignin carbon acid catalyst.
P-Menthane-3,8-diol (PMD) is receiving growing attention as a natural mosquito repellent with lower toxicity compared to the widely-used N,N-di-Et m-toluamide (DEET). In this study, sustainable carbon acid catalysts derived from alk. lignin (AL) were prepared for synthesizing PMD from a popular chem. (±)-citronellal in an environmentally friendly solvent of water. The catalytic performances of the AL-derived carbon acid catalysts prepared at different pyrolysis temperatures were better than those of other catalysts such as carbon black and H-USY. In particular, when the AL pyrolyzed at 500°C was used as the carbon acid catalyst, the conversion of (±)-citronellal was as high as 97% with a high PMD yield of 86%, indicating that waste alk. lignin from pulp and paper industries can be used as a source of acid catalysts. It is found that the formation of PMD is preferred over catalysts with weaker acid sites, whereas isopulegol was more easily formed over stronger acid sites. Moreover, the reaction route of the citronellal cyclization-hydration reaction was more dominant via the carbocation-hydration pathway rather than the isopulegol hydration route on the weaker carbon acid catalyst.
New Journal of Chemistry published new progress about Carbon black Role: CAT (Catalyst Use), SPN (Synthetic Preparation), USES (Uses), PREP (Preparation) (Vulcan XC 72C). 42822-86-6 belongs to class alcohols-buliding-blocks, name is 2-(2-Hydroxypropan-2-yl)-5-methylcyclohexanol, and the molecular formula is C10H20O2, Safety of 2-(2-Hydroxypropan-2-yl)-5-methylcyclohexanol.
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