Synthesis of Polyoxymethylene Dimethyl Ethers from Dimethyl Ether Direct Oxidation over Carbon-Based Catalysts

被引：28

作者：

Gao, Xiu-Juan ^{[1
,2
]}

Wang, Wen-Feng ^{[1
,2
]}

Gu, Ying-Ying ^{[1
,2
]}

Zhang, Zhen-Zhou ^{[1
,2
]}

Zhang, Jun-Feng ^{[1
]}

Zhang, Qing-De ^{[1
]}

Tsubaki, Noritatsu ^{[1
,3
]}

Han, Yi-Zhuo ^{[1
]}

Tan, Yi-Sheng ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Shanxi, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Univ Toyama, Dept Appl Chem, Sch Engn, Gofuku 3190, Toyama 9308555, Japan

来源：

CHEMCATCHEM | 2018年 / 10卷 / 01期

基金：

中国国家自然科学基金;

关键词：

carbon materials; oxidation; polymers; surface chemistry; titanium; SELECTIVE OXIDATION; ACTIVATED CARBON; MILD CONDITIONS; METHYL FORMATE; DIMETHOXYMETHANE; DEHYDROGENATION; OXIDE; ETHYLBENZENE; FORMALDEHYDE; NANOTUBES;

D O I：

10.1002/cctc.201701213

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The synthesis of polyoxymethylene dimethyl ethers (DMMx) with a selectivity of 84.3% by direct oxidation of dimethyl ether (DME) was realized over 30%Ti(SO4)(2)/active carbon (AC) catalyst. This process also significantly promotes the growth of the C-O chain. The catalytic performances of Ti(SO4)(2)/AC and Ti(SO4)(2)/graphene (G) catalysts differ largely for DME oxidation reaction, although both AC and G are carbon materials. The carbonyl and hydroxyl groups on the surface of the carbon-based catalysts play an important role in DME direct oxidation to DMMx. Owing to the differences of surface structure and chemical properties of AC and G materials, the different interaction between the Ti(SO4)(2) and supports remarkably affects the sulfate structures on the supports surface and leads to the large differences in the acid and redox properties of catalysts.

引用

页码：273 / 279

页数：7

共 40 条

[11] Mechanistic study of selective oxidation of dimethyl ether to formaldehyde over alumina-supported molybdenum oxide catalyst [J].