effectofsilanizationoncatalyticperformanceofptsapo11forhydroisomerizationofndodecane

	effectofsilanizationoncatalyticperformanceofptsapo11forhydroisomerizationofndodecane
	Wang ZM(汪哲明)2; Tian ZJ(田志坚)2; Teng F(滕飞)2; Xu YP(徐云鹏)2; Hu S(胡胜)1; Tan MW(谭明伟)1; Xu ZS(徐竹生)2; Lin LW(林励吾)2
刊名	chinesejournalofcatalysis
	2005-01-01
卷号	26 期号:9 页码:819
ISSN号	0253-9837
英文摘要	The effect of silanization of SAPO-11 on the hydroisomerization of n-dodecane over Pt/SAPO-11 catalysts was studied. The SAPO-11 support was silanized by the chemical liquid deposition with tetraethoxysilane or tetrachlorosilicane. The Pt/SAPO-11 catalysts were characterized by X-ray diffraction, N-2 adsorption, NH3-temperature-programmed desorption (TPD) and hydrocracking of 2,2,4-trimethylpentane. N-2 adsorption and NH3-TPD results show that the micropore volume and the acidity of the catalysts are reduced after silanization, and the reaction rates of 2,2,4-trimethylpetane hydrocracking over the catalysts are also reduced. This indicates that the acidic sites on the external surface of SAPO-11 are selectively deactivated by silanization. The selectivity for monobranched isomers over Pt/SAPO-11 is enhanced by silanization, which is ascribed to the shrink of pore mouths of SAPO-11 after silanization. Moreover, the total hydroisomerization selectivity decreases after silanization. Due to the shrink of pore mouths of the silanized catalysts, diffusion limitation to branched products might increase, leading to severe hydrocracking reactions in micropores of the catalysts.
语种	英语
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/178237]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.中国石油大庆石化分公司 2.中国科学院大连化学物理研究所
推荐引用方式 GB/T 7714	Wang ZM,Tian ZJ,Teng F,et al. effectofsilanizationoncatalyticperformanceofptsapo11forhydroisomerizationofndodecane[J]. chinesejournalofcatalysis,2005,26(9):819.
APA	汪哲明.,田志坚.,滕飞.,徐云鹏.,胡胜.,...&林励吾.(2005).effectofsilanizationoncatalyticperformanceofptsapo11forhydroisomerizationofndodecane.chinesejournalofcatalysis,26(9),819.
MLA	汪哲明,et al."effectofsilanizationoncatalyticperformanceofptsapo11forhydroisomerizationofndodecane".chinesejournalofcatalysis 26.9(2005):819.