Highly stable Co3O4 nanoparticles-assembled microrods derived from MOF for efficient total propane oxidation

被引：27

作者：

Lin, Daifeng ^{[1
]}

Zheng, Yingbin ^{[1
]}

Feng, Xiaoshan ^{[1
]}

You, Yufeng ^{[1
]}

Wu, Enhui ^{[1
]}

Luo, Yongjin ^{[1
]}

Qian, Qingrong ^{[1
]}

Chen, Qinghua ^{[1
,2
]}

机构：

[1] Fujian Normal Univ, Fujian Key Lab Pollut Control & Resource Reuse, Fuzhou 350007, Peoples R China

[2] Fujian Normal Univ, Fuqing Branch, Fuqing 350300, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE | 2020年 / 55卷 / 12期

基金：

美国国家科学基金会; 中国国家自然科学基金;

关键词：

METAL-ORGANIC FRAMEWORKS; ONE-STEP SYNTHESIS; CATALYTIC PERFORMANCE; EXCELLENT PERFORMANCE; REACTION-MECHANISM; ACTIVE CATALYST; ANODE MATERIALS; CO OXIDATION; OXIDES; COBALT;

D O I：

10.1007/s10853-020-04368-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Co3O4 nanoparticles-assembled microrods (Mic-Co3O4) were successfully synthesized with the precursor of Co-BTC (BTC = 1,3,5-benzenetricarboxylic acid) and applied for efficient propane (C3H8) oxidation. It shows a higher reaction rate of 4.14 mu mol(C3H8) gcat-1 s(-1) at 250 degrees C, when it is only 1.18 mu mol(C3H8) gcat-1 s(-1) obtained over Co3O4 nanoparticles (Np-Co3O4) via direct calcination of cobalt nitrate. Moreover, Mic-Co3O4 remains the original morphology of Co-BTC MOF, and the keeping pores enhance the microrod rigidity, hindering nanoparticles growth and thus resulting in superior thermal stability. After 12 h of durability test at 500 degrees C, the size of Mic-Co3O4 nanoparticles increases slightly from 62 to 70 nm, whereas it is from 97 to 130 nm for Np-Co3O4. Meanwhile, the calcination of Co-BTC precursor can induce large amounts of surface Co2+, favoring activation of adsorptive oxygen species. This can promote oxygen mobility, which is helpful for total propane oxidation.

引用

页码：5190 / 5202

页数：13

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