Ca-Doped CrOX/γ-Al2O3 Catalysts with Improved Dehydrogenation Performance for the Conversion of Isobutane to Isobutene

被引：9
|
作者：
Wang, Guangjian [1 ]
Song, Ning [1 ]
Lu, Kai [1 ]
Wang, Wentai [2 ]
Bing, Liancheng [1 ]
Zhang, Qinqin [3 ]
Fu, Haitao [4 ]
Wang, Fang [1 ]
Han, Dezhi [1 ]
机构：
[1] Qingdao Univ Sci & Technol, Coll Chem Engn, State Key Lab Base Ecochem Engn, Qingdao 266042, Shandong, Peoples R China
[2] Ocean Univ China, Coll Chem & Chem Engn, Minist Educ, Key Lab Marine Chem Theory & Technol, Qingdao 266100, Shandong, Peoples R China
[3] Qingdao Univ Sci & Technol, Coll Marine Sci & Biol Engn, Shandong Prov Key Lab Biochem Engn, Qingdao 266042, Shandong, Peoples R China
[4] Northeastern Univ, Sch Met, Shenyang 110819, Liaoning, Peoples R China
来源：
CATALYSTS | 2019年 / 9卷 / 11期
基金：
中国国家自然科学基金;
关键词：
calcium; chromium oxide; interaction; isobutane dehydrogenation; NONOXIDATIVE DEHYDROGENATION; PROPANE DEHYDROGENATION; GAMMA-ALUMINA; OLEFINS;
D O I：
10.3390/catal9110968
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 dehydrogenation of low-carbon alkane to obtain olefins is an effective way to meet the steadily increasing demand of these building blocks in chemical industry. In this study, Ca-doped CrOx/gamma-Al2O3 catalysts were fabricated via a one-pot method by employing Cr(OH)(3) as the precursor, and their catalytic performances were tested in the dehydrogenation of isobutane to isobutene (DITI) process. The prepared catalysts were intensively characterized by XRD, SEM, NH3-TPD, H-2-TPR, low-temperature N-2 adsorption-desorption, etc. These characterization results indicated that the doping of Ca into the CrOx/gamma-Al2O3 catalysts could tune the acidity properties of the prepared catalysts and enhance the interaction between the active species and support. The Ca-doped CrOx/gamma-Al2O3 catalysts, especially the Ca2-Cr/gamma-Al2O3 catalyst with a Ca doping of 2 wt%, exhibited a superior catalytic performance in the DITI process in comparison with the undoped catalyst.
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页数：10
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