Performance of Pt/MgAPO-11 catalysts in the hydroisomerization of n-dodecane

	Performance of Pt/MgAPO-11 catalysts in the hydroisomerization of n-dodecane
	Yang, XM ; Xu, ZS ; Tian, ZJ ; Ma, HJ ; Xu, YP ; Qu, W ; Lin, LW
刊名	catalysis letters
	2006-07-01
卷号	109 期号:3-4 页码:139-145
关键词	hydroisomerization n-dodecane MgAPO-11 AEL molecular sieves
通讯作者	田志坚
产权排序	1;1
英文摘要	mgapo-11 molecular sieves with varying mg contents synthesized by the hydrothermal method were used as supports for bifunctional pt/mgapo-11 catalysts. mgapo-11 molecular sieves and the corresponding catalysts were characterized by x-ray diffraction (xrd), x-ray fluorescence spectroscopy (xrf), temperature-programmed desorption of nh3 (nh3-tpd), differential thermogravimetric (dtg) analysis, temperature-programmed reduction of h-2 (h-2-tpr), h-2 chemisorption and catalytic reaction evaluation. the results indicated that the acidity generated via the substitution of mg2+ for al3+ in the framework increased with the mg content. acting as acidic components, the mgapo-11 molecular sieves loaded with pt were tested in the hydroisomerization of n-dodecane. optimum isomer yield was obtained over the pt/mgapo-11 catalyst that had neither the highest acidity nor the highest pt loading among the tested catalysts. in fact, the activity and the isomer yield both could attain a maximum on 0.5 wt.% pt/mgapo-11 catalysts with differing mg contents. a lower mg content resulted in an insufficient acidity, whilst a higher mg content weakened the dehydrogenation/hydrogenation function of the pt. these inappropriate balances between the acidic and the metallic functions of the catalysts would lead to low activities and isomer yields. on the other hand, the 0.5 wt.% pt/mgapo-11(3) catalyst was found to have a good balance between the acidic and the metallic functions, and thus exhibited both high activity and isomer yield in comparison with the conventional 0.5 wt.% pt/sapo-11 catalyst.
WOS标题词	science & technology ; physical sciences
类目[WOS]	chemistry, physical
研究领域[WOS]	chemistry
关键词[WOS]	molecular-sieves ; acid strength ; heptane ; hydrocracking ; isomerization ; pt/sapo-11 ; sapo-11 ; decane ; hydroconversion ; dehydration
收录类别	SCI
原文出处	true
语种	英语
WOS记录号	WOS:000238155200004
公开日期	2010-11-30
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/97947]
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.Chinese Acad Sci, Dalian Inst Chem Phys, Lab Nat Gas Utilizat & Appl Catalysis, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	Yang, XM,Xu, ZS,Tian, ZJ,et al. Performance of Pt/MgAPO-11 catalysts in the hydroisomerization of n-dodecane[J]. catalysis letters,2006,109(3-4):139-145.
APA	Yang, XM.,Xu, ZS.,Tian, ZJ.,Ma, HJ.,Xu, YP.,...&Lin, LW.(2006).Performance of Pt/MgAPO-11 catalysts in the hydroisomerization of n-dodecane.catalysis letters,109(3-4),139-145.
MLA	Yang, XM,et al."Performance of Pt/MgAPO-11 catalysts in the hydroisomerization of n-dodecane".catalysis letters 109.3-4(2006):139-145.