Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 1163-19-5, Name is 6,6′-Oxybis(1,2,3,4,5-pentabromobenzene), molecular formula is C12Br10O, belongs to ethers-buliding-blocks compound. In a document, author is Baxter, Nathan Cody, introduce the new discover, Category: ethers-buliding-blocks.
Kraft Lignin Ethanolysis over Zeolites with Different Acidity and Pore Structures for Aromatics Production
To utilize its rich aromatics, lignin, a high-volume waste and environmental hazard, was depolymerized in supercritical ethanol over various zeolites types with different acidity and pore structures. Targeting at high yield/selectivity of aromatics such as phenols, microporous Beta, Y, and ZSM-5 zeolites were first examined in lignin ethanolysis, followed by zeolites with similar micropore size but different acidity. Further comparisons were made between zeolites with fin-like and worm-like mesoporous structures and their microporous counterparts. Despite depolymerization complexity and diversified ethanolysis products, strong acidity was found effective to cleave both C-O-C and C-C linkages of lignin while mild acidity works mainly in ether bond breakdown. However, when diffusion of gigantic molecules is severe, pore size, particularly mesopores, becomes more decisive on phenol selectivity. These findings provide important guidelines on future selection and design of zeolites with appropriate acidity and pore structure to promote lignin ethanolysis or other hydrocarbon cracking processes.
Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law. In my other articles, you can also check out more blogs about 1163-19-5. Category: ethers-buliding-blocks.