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Effect of silanization on catalytic performance of Pt/SAPO-11 for hydroisomerization of n-dodecane
Wang, ZM; Tian, ZJ; Teng, F; Xu, YP; Hu, S; Tan, MW; Xu, ZS; Lin, LW
KeywordSilanization Platinum Sapo-11 Zeolite N-dodecane Hydroisomerization Selectivity
Source PublicationCHINESE JOURNAL OF CATALYSIS
2005-09-01
Volume26Issue:9Pages:819-823
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Applied ; Chemistry, Physical ; Engineering, Chemical
WOS Research AreaChemistry ; Engineering
WOS KeywordZEOLITE CATALYSTS ; HYDROCONVERSION ; SORPTION ; ALKANES ; DECANE ; ACID
AbstractThe 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.
Language英语
WOS IDWOS:000232474800020
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/139789
Collection中国科学院大连化学物理研究所
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, Lab Nat Gas Utilizat & Appl Catalysis, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
3.Res Inst Daqing Petrochem Co, Heilongjiang 163714, Peoples R China
Recommended Citation
GB/T 7714
Wang, ZM,Tian, ZJ,Teng, F,et al. Effect of silanization on catalytic performance of Pt/SAPO-11 for hydroisomerization of n-dodecane[J]. CHINESE JOURNAL OF CATALYSIS,2005,26(9):819-823.
APA Wang, ZM.,Tian, ZJ.,Teng, F.,Xu, YP.,Hu, S.,...&Lin, LW.(2005).Effect of silanization on catalytic performance of Pt/SAPO-11 for hydroisomerization of n-dodecane.CHINESE JOURNAL OF CATALYSIS,26(9),819-823.
MLA Wang, ZM,et al."Effect of silanization on catalytic performance of Pt/SAPO-11 for hydroisomerization of n-dodecane".CHINESE JOURNAL OF CATALYSIS 26.9(2005):819-823.
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