SELECTIVE OXIDATION OF BUTANE ON PHOSPHORUS-MODIFIED SILICA-SUPPORTED VANADIA CATALYSTS

被引：29
|
作者：
HARDING, WD
BIRKELAND, KE
KUNG, HH
机构：
[1] NORTHWESTERN UNIV,DEPT CHEM ENGN,EVANSTON,IL 60208
[2] NORTHWESTERN UNIV,DEPT CHEM,IPATIEFF LAB,EVANSTON,IL 60208
来源：
CATALYSIS LETTERS | 1994年 / 28卷 / 01期
关键词：
V/SIO2; TRIETHYLPHOSPHATE; CALCINATION; MALEIC ANHYDRIDE; BUTANE OXIDATION;
D O I：
10.1007/BF00812463
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：
Triethylphosphate impregnation of 2.8 wt% V/SiO2 and subsequent controlled calcination produced phosphorus-modified supported vanadium catalysts. Phosphorus modification enhanced the yield of maleic anhydride in the partial oxidation of butane. Varying the phosphorus to vanadium atomic ratio from 0 to 2.8 increased the selectivity to maleic anhydride from 0 to approximately 48%. The selectivity was nearly constant up to 20% butane conversion and for different O-2/C4H10 ratios. The Raman spectra of the phosphorus-modified samples had bands at 1040 and 930 cm(-1), and broad unresolved bands between 580 and 540 cm(-1). It was concluded that the active phases in these samples were alpha-VOPO4.
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页码：1 / 7
页数：7
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