Effect of Chromium Precursor on the Catalytic Behavior of Chromium Oxide Catalysts in Oxidative Propane and Isobutane Dehydrogenation with Carbon Dioxide

被引：0

作者：

Tedeeva, Marina A. ^{[1
]}

Mashkin, Mikhail Yu. ^{[1
]}

Baybursky, Vladimir L. ^{[1
,2
]}

Pribytkov, Petr V. ^{[1
,2
]}

Murashova, Elena V. ^{[1
]}

Kalmykov, Konstantin B. ^{[1
]}

Shesterkina, Anastasiya A. ^{[1
]}

Kapustin, Gennady I. ^{[2
]}

Tkachenko, Olga P. ^{[2
]}

Dunaev, Sergey F. ^{[1
]}

Kustov, Leonid M. ^{[1
,2
]}

Kustov, Alexander L. ^{[1
]}

机构：

[1] Department of Chemistry, M. V. Lomonosov Moscow State University, Moscow

[2] N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow

来源：

Catalysts | 2025年 / 15卷 / 03期

关键词：

carbon dioxide utilization; chromium oxide catalyst; effect of precursor; ODP-CO[!sub]2[!/sub; propylene production; silica;

D O I：

10.3390/catal15030226

中图分类号：

学科分类号：

摘要：

A series of 5 wt.% Cr/SiO2 catalysts were prepared through incipient wet impregnation using different chromium salts as a source of Cr (chromium (III) sulfate, acetylacetonate, nitrate, ammonium dichromate). The obtained catalysts were characterized by SEM-EDX, TEM, DRIFT-CD3CN spectroscopy, UV-VIS diffuse reflectance spectroscopy, and the N2 low-temperature adsorption–desorption technique. The catalysts were tested in propane, and isobutane dehydrogenation assisted with CO2 at 600–750 °C. The highest activity in propane dehydrogenation was observed for the catalyst obtained from chromium acetylacetonate, the yield of propylene was 32% at 750 °C, and in the isobutane dehydrogenation reaction, the catalyst obtained from chromium sulfate was the best one; the yield of isobutene was ~30% at 600 °C. The obtained results show that the type of chromium precursor has a significant effect on the efficiency of the catalyst in the propane and isobutane dehydrogenation with CO2. © 2025 by the authors.

引用

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