Topic
Acetone
About: Acetone is a research topic. Over the lifetime, 9458 publications have been published within this topic receiving 120867 citations. The topic is also known as: propanone & dimethylketone.
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TL;DR: In this paper, the one-step synthesis of methyl isobutyl ketone from acetone and hydrogen was investigated by using Pd/Nb2O5· nH2O catalyst.
47 citations
TL;DR: The soluble system rather than the residue exhibited characteristics previously reported for a soluble aspartate N-acetyltransferase preparation of rat brain; hence, it is suggested that previous investigators were not measuring true l-aspartate-14C and acetyl coenzyme A activity.
47 citations
TL;DR: In this paper, a molecular sieve was used to accelerate the synthesis of oleoyl l -ascorbate in an immobilized-lipase-catalyzed condensation of ascorbic acid and various unsaturated fatty acids.
46 citations
Patent•
19 Feb 2001
TL;DR: In this article, a β-zeolite catalyst with a SiO2/Al2O3 molar ratio greater than 10:1 was used for the alkylation of benzene.
Abstract: The invention relates to a process for the preparation of cumene by reacting isopropanol or a mixture of isopropanol and propene with benzene in presence of a β-zeolite catalyst having a SiO2/Al2O3 molar ratio greater than 10:1 that can be integrated in a process for preparing phenol, which comprises the stepsI. preparation of cumene as described above, II. oxidation of cumene to cumene hydroperoxide, III. acid-catalyzed cleavage of cumene hydroperoxide to give phenol and acetone and IV. hydrogenation of acetone to form isopropanol.In the reaction of isopropanol with benzene, propene is formed by dehydration of isopropanol simultaneously with the alkylation of benzene to cumene by means of isopropanol and the propene formed is likewise used for the alkylation of benzene to cumene. Formation of n-propylbenzene in this process step according to the invention is barely observed or is in the range below 150 wppm.The s-zeolite catalyst having a SiO2/Al2O3 molar ratio greater than 10:1 exhibits an increased activity in the alkylation of benzene and leads to a higher selectivity in the alkylation, so that the yield in the overall process for preparing phenol can be improved compared to conventional processes.
46 citations
TL;DR: A novel ABE fermentation strategy focusing on bio-acetone production by co-culturing Clostridium acetobutylicum/Saccharomyces cerevisiae with exogenous acetate addition was proposed and revealed the strategy could, enhance C. acetob Deputylicum survival oriented amino acids assimilation in the cells and direct most of extra consumed glucose into acetone/butanol synthesis routes.
46 citations