Enhanced Catalytic Activity with Oxygen for Methyl Acrylate Production via Cross-Aldol Condensation Reaction

被引：12

作者：

Zuo, Cuncun ^{[1
,2
]}

Ge, Tingting ^{[1
]}

Wang, Gang ^{[2
]}

Guo, Xinpeng ^{[1
]}

Li, Chunshan ^{[1
,2
]}

Zhang, Suojiang ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Beijing Key Lab Ion Liquids Clean Proc, Key Lab Green Proc & Engn, State Key Lab Multiphase Complex Syst,Inst Proc E, Bei Er Tiao 1, Beijing 100080, Peoples R China

[2] Univ Chinese Acad Sci, Sch Chem & Chem Engn, Beijing 100049, Peoples R China

来源：

CHEMICAL ENGINEERING & TECHNOLOGY | 2018年 / 41卷 / 07期

基金：

中国国家自然科学基金;

关键词：

-H removal; Catalytic process intensification; Cross-aldol condensation; Methyl acrylate production; Molecular simulation; N-BUTANE OXIDATION; VANADIUM PHOSPHATE CATALYSTS; PHOSPHORUS OXIDE CATALYSTS; P-O CATALYSTS; INTERCALATION-EXFOLIATION-REDUCTION; SUPPORTED VPO CATALYSTS; SELECTIVE OXIDATION; MALEIC-ANHYDRIDE; ACETIC-ACID; IN-SITU;

D O I：

10.1002/ceat.201700500

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

An innovative technology for the production of methyl acrylate via vapor-phase cross-aldol condensation is described. Catalytic process intensification was realized through the enhanced catalytic activity with oxygen by catalyst design and adjustment of active sites. Crystal phases with different V valences in vanadium phosphate catalysts were controllably synthesized in the presence of oxygen. Donating electron and withdrawing electron sites arose when oxygen moved from one crystalline phase to another, just for the -H removal of methyl acetate and formaldehyde protonation. The reaction pathway and transition states were confirmed via molecular simulation with quantum chemistry theory. The catalytic activity was evaluated in a fixed-bed reactor by adjusting the percentage of oxygen in the carrier gas. Finally, the mechanism of -H removal of methyl acetate through the activated oxygen was clarified.

引用

页码：1331 / 1341

页数：11