Oxidative coupling of methane in dense ceramic membrane reactor with high yields

被引:70
作者
Akin, FT [1 ]
Lin, YS [1 ]
机构
[1] Univ Cincinnati, Dept Chem Engn, Cincinnati, OH 45221 USA
关键词
D O I
10.1002/aic.690481019
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Oxidative coupling of methane (OCM) was studied with dense tubular Bi1.5Y0.3Sm0.2O3 (BYS) membranes at various temperatures (870 - 930degreesC). BYS powders were synthesized by a citrate method. Tubular-shaped dense membranes of BYS in the fluorite-type FCC phase structure were fabricated by cold isostatic pressing with green machining. The best one-pass C-2 (C2H4 + C2H6) yield achieved for OCM in the BYS dead-end membrane reactor was 35% at a C-2 selectivity of 54% at 900degreesC At the same C-2 yield, the membrane reactor mode gives C-2 selectivity of over 200% higher than the cofeed mode in the same membrane reactor under similar conditions. The oxygen permeation fluxes through tubular BYS membrane reactors under OCM reaction conditions are approximately 1.5 to 3.5 times higher than those under oxygen permeation conditions with He as the purge. After 6 days of OCM, BYS membrane remained in good integrity with minor phase segregation observed at the reaction side of the membrane.
引用
收藏
页码:2298 / 2306
页数:9
相关论文
共 19 条
[1]   BENEFICIAL EFFECT OF OXYGEN DISTRIBUTION ON METHANE CONVERSION AND C-2-SELECTIVITY IN OXIDATIVE COUPLING OF METHANE TO C-2-HYDROCARBONS OVER LANTHANUM-PROMOTED MAGNESIUM-OXIDE [J].
CHOUDHARY, VR ;
CHAUDHARI, ST ;
RAJPUT, AM ;
RANE, VH .
JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1989, (20) :1526-1527
[2]   METHANE OXIDATIVE COUPLING USING POROUS CERAMIC MEMBRANE REACTORS .2. REACTION STUDIES [J].
CORONAS, J ;
MENENDEZ, M ;
SANTAMARIA, J .
CHEMICAL ENGINEERING SCIENCE, 1994, 49 (12) :2015-2025
[3]   METHANE TO ETHYLENE WITH 85-PERCENT YIELD IN A GAS RECYCLE ELECTROCATALYTIC REACTOR-SEPARATOR [J].
JIANG, Y ;
YENTEKAKIS, IV ;
VAYENAS, CG .
SCIENCE, 1994, 264 (5165) :1563-1566
[4]   SYNTHESIS OF ETHYLENE VIA OXIDATIVE COUPLING OF METHANE .1. DETERMINATION OF ACTIVE CATALYSTS [J].
KELLER, GE ;
BHASIN, MM .
JOURNAL OF CATALYSIS, 1982, 73 (01) :9-19
[5]   Oxygen-permeable dense membrane reactor for the oxidative coupling of methane [J].
Lu, YP ;
Dixon, AG ;
Moser, WR ;
Ma, YH ;
Balachandran, U .
JOURNAL OF MEMBRANE SCIENCE, 2000, 170 (01) :27-34
[6]   Oxidative coupling of methane using oxygen-permeable dense membrane reactors [J].
Lu, YP ;
Dixon, AG ;
Moser, WR ;
Ma, YH ;
Balachandran, U .
CATALYSIS TODAY, 2000, 56 (1-3) :297-305
[7]   Catalytic conversion of methane to more useful chemicals and fuels: a challenge for the 21st century [J].
Lunsford, JH .
CATALYSIS TODAY, 2000, 63 (2-4) :165-174
[8]   OXIDE-ION TRANSPORT FOR SELECTIVE OXIDATIVE COUPLING OF METHANE WITH NEW MEMBRANE REACTOR [J].
NOZAKI, T ;
FUJIMOTO, K .
AICHE JOURNAL, 1994, 40 (05) :870-877
[9]   KINETIC-TRANSPORT MODELS OF BIMODAL REACTION SEQUENCES .1. HOMOGENEOUS AND HETEROGENEOUS PATHWAYS IN OXIDATIVE COUPLING OF METHANE [J].
REYES, SC ;
IGLESIA, E ;
KELKAR, CP .
CHEMICAL ENGINEERING SCIENCE, 1993, 48 (14) :2643-2661
[10]   Performance of a mixed-conducting ceramic membrane reactor with high oxygen permeability for methane conversion [J].
Shao, ZP ;
Dong, H ;
Xiong, GX ;
Gong, Y ;
Yang, WS .
JOURNAL OF MEMBRANE SCIENCE, 2001, 183 (02) :181-192