Effects of iron content on bismuth molybdate for the oxidative dehydrogenation of n-butenes to 1,3-butadiene

被引：39
|
作者：
Park, Jung-Hyun [1 ]
Noh, Hyeryeung [2 ]
Park, Ji Won [2 ]
Row, Kyoungho [2 ]
Jung, Kwang Deog [3 ]
Shin, Chae-Ho [1 ]
机构：
[1] Chungbuk Natl Univ, Dept Chem Engn, Chungbuk 361763, South Korea
[2] Kumho Petrochem R&BD Ctr, Proc Solut Team, Taejon 305348, South Korea
[3] Korea Inst Sci & Technol, Clean Energy Ctr, Seoul 136791, South Korea
来源：
APPLIED CATALYSIS A-GENERAL | 2012年 / 431卷
关键词：
Bismuth molybdenum iron oxide; Oxidative dehydrogenation; n-Butenes; 1.3-butadiene; Oxygen mobility; CATALYTIC PERFORMANCE; SELECTIVE OXIDATION; OXYGEN MOBILITY; C-4; RAFFINATE-3; CALCINATION TEMPERATURE; PROPYLENE; 1-BUTENE; SYSTEM; GAMMA-BI2MOO6; PHASE;
D O I：
10.1016/j.apcata.2012.04.028
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：
BiMoFex oxide catalysts (x = 0-1.00) were prepared by co-precipitation and their catalytic activities in the oxidative dehydrogenation of n-butenes were tested. X-ray diffraction (XRD) and Raman spectroscopy showed that the main solid phases were composed of Bi3Mo2FeO12 as oxygen acceptor and Fe-2(MoO4)(3) as oxygen donor and the mixing of these phases enhanced catalytic activity. XRD patterns showed that Fe-2(MoO4)(3) was reduced to FeMoO4 during the reaction. The peak temperature of programmed reduction of 1-butene and successive oxidation (TPRO) was dependent on Fe contents in BiMoFex oxide catalysts and was minimized at x = 0.65, which showed the greatest oxygen mobility. The peak position in the low temperature region of TPRO profiles could be correlated with butene conversion and BD yield. (c) 2012 Elsevier B.V. All rights reserved.
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页码：137 / 143
页数：7
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