Morphological control of inverted MgO-SiO2 composite catalysts for efficient conversion of ethanol to 1,3-butadiene

被引：34

作者：

Li, Shenxiao ^{[1
]}

Men, Yong ^{[1
]}

Wang, Jinguo ^{[1
]}

Liu, Shuang ^{[1
]}

Wang, Xuefei ^{[1
]}

Ji, Fei ^{[1
]}

Chai, Shanshan ^{[1
]}

Song, Qiaoling ^{[1
]}

机构：

[1] Shanghai Univ Engn Sci, Coll Chem & Chem Engn, Shanghai 201620, Peoples R China

来源：

APPLIED CATALYSIS A-GENERAL | 2019年 / 577卷

基金：

中国国家自然科学基金;

关键词：

Ethanol; 1,3-butadiene; MgO-SiO2; Mg-O-Si bonds; Flower-like; Morphological control; SILICA MIXED OXIDES; SELECTIVE SYNTHESIS; CARBON NANOTUBES; BIO-ETHANOL; BUTADIENE; MGO; TRANSFORMATION; NANOPARTICLES; REACTIVITY; STEP;

D O I：

10.1016/j.apcata.2019.03.007

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：

In this work, three novel MgO-SiO2 composite catalysts with inverted structure have been synthesized via a facile and scalable strategy by means of the incipient wetness impregnation of the silica sol onto MgO precursors with different morphologies, and evaluated for the one-step conversion of ethanol to 1,3-butadiene. The prepared flower-like MgO-SiO2 composite catalysts exhibited highly enhanced catalytic activity than those catalysts synthesized from MgO precursors with nanodisks and nanosheets morphologies. Characterization results based on XRD, FT-IR, UV vis, BET, CO2-TPD, NH,-TPD, ethanol-TPD, and Si-29 MAS NMR revealed that unique layered flower-like architectures may facilitate the formation of interfacial Mg-O-Si chemical bond in binary MgO-SiO2 composite catalysts which are mainly responsible for the superior activity. This study presents a new strategy to design and develop the catalyst for efficient conversion of bio-ethanol to 1,3-butadiene by morphological control of MgO-SiO2 bifunctional catalysts.

引用

页码：1 / 9

页数：9

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