3881-06-9Relevant articles and documents
Cascade reactions for the continuous and selective production of isobutene from bioderived acetic acid over zinc-zirconia catalysts
Crisci, Anthony J.,Dou, Herui,Prasomsri, Teerawit,Romn-Leshkov, Yuriy
, p. 4196 - 4200 (2015/02/19)
Bio-oil (obtained from biomass fast pyrolysis) contains a high concentration of acetic acid, which causes problems related to its storage and handling. Acetic acid was upgraded directly to isobutene over a ZnxZryOz binary metal oxide. The reaction proceeds via a three-step cascade involving ketonization, aldol condensation, and C-C hydrolytic bond cleavage reactions, which was corroborated by isotopic labeling studies. Separately, ZnO and ZrO2 are incapable of producing isobutene from either acetic acid or acetone. In contrast, under optimal conditions, a Zn2Zr8Oz catalyst generates a ca. 50% isobutene yield, which corresponds to 75% of the theoretical maximum. Spectroscopic investigations revealed that a balanced concentration of acid and base sites is required to maximize isobutene yields.
The Formation of Acetone Complexes from the Reaction of CO with 2(μ-O) (Y=Me, Cl) and their Decomposition Reactions
Flores, Juan Carlos,Mena, Miguel,Royo, Pascual,Serrano, Ricardo
, p. 617 - 618 (2007/10/02)
The reaction of 2(μ-O) (Y=Me, Cl) and CO gives η2-acetone complexes, which liberate Me2CO upon treatment with oxygen and Me2CHOH upon hydrolysis, and their thermal decomposition proceeds with deoxygenation of the acetone ligand an
