Design of Pt/SAPO-11 bifunctional catalyst with superior metal-acid balance constructedviaa novel one-step pre-loading strategy for enhancingn-dodecane hydroisomerization performance

doi:10.1039/d0cy01113d

	Design of Pt/SAPO-11 bifunctional catalyst with superior metal-acid balance constructedviaa novel one-step pre-loading strategy for enhancingn-dodecane hydroisomerization performance
	Du, Yanyan 1; Yao, Heliang 3; Hu, Wenjing 1; Tan, Yangchun 1; Xu, Yanhui 1; Fu, Wenjia 1; Yuan, Long 2; Li, Jiusheng 1
刊名	CATALYSIS SCIENCE & TECHNOLOGY
	2020-09-07
卷号	10 期号:17 页码:5953-5963
ISSN号	2044-4753
DOI	10.1039/d0cy01113d
通讯作者	Yuan, Long(yuanlong@jlnu.edu.cn) ; Li, Jiusheng(lijs@sari.ac.cn)
英文摘要	A novel metal preloading route is proposed to prepare Pt/SAPO-11 bifunctional catalysts. The addition of platinum brings about an increase in catalyst product yield with a growth rate of 87% attributed to chemical adsorption between Pt and the lone pair of electrons in the nitrogen atom of the structure-directing agent. More interestingly, it can be concluded from the HAADF-STEM, SE-STEM images and DRIFTS data on CO adsorption, there are small Pt nanoparticles confined inside the SAPO-11 molecular sieve, while the big Pt nanoparticles are dispersed on the surface. The synergistic effect between the metal sites and acid sites can be improved by the enhancement of metal-acid balance, by adjusting then(Pt)/n(A)ratio. A better metal-acid balance property is achieved and the carbenium ion can quickly go through the hydrogenating reaction on Pt nanoparticles, hence shortening the time it is trapped in the acid sites uponn-dodecane hydroisomerization. Consequently, the cracking reaction can be effectively avoided and liquid yield as high as 99% and isomer yield up to 84% is produced, much superior than the Pt/SAPO-11 catalyst synthesizedviathe traditional impregnation method of Pt with the maximum isomer yield of 52%. Moreover, more multi-branched isomers are produced and can further help improve the low-temperature rheology when used as lubricant base oil.
资助项目	Natural Science Foundation of Shanghai[19ZR1463400] ; Youth Innovation Promotion Association, CAS[2019288]
WOS关键词	N-OCTANE HYDROISOMERIZATION ; SELECTIVE ISOMERIZATION ; ZEOLITE ; SAPO-11 ; HYDROCONVERSION ; ALKANES ; SITES ; HYDROCRACKING ; METHYLAMINE ; ADSORPTION
WOS研究方向	Chemistry
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000565991300019
内容类型	期刊论文
源URL	[http://119.78.100.183/handle/2S10ELR8/291601]
专题	中国科学院上海药物研究所
通讯作者	Yuan, Long; Li, Jiusheng
作者单位	1.Chinese Acad Sci, Shanghai Adv Res Inst, Green Chem Engn Technol Res Ctr, Shanghai 201210, Peoples R China 2.Jilin Normal Univ, Minist Educ, Key Lab Funct Mat Phys & Chem, Changchun 130103, Peoples R China 3.Chinese Acad Sci, Shanghai Inst Ceram, Anal & Testing Ctr Inorgan Mat, Shanghai 200050, Peoples R China
推荐引用方式 GB/T 7714	Du, Yanyan,Yao, Heliang,Hu, Wenjing,et al. Design of Pt/SAPO-11 bifunctional catalyst with superior metal-acid balance constructedviaa novel one-step pre-loading strategy for enhancingn-dodecane hydroisomerization performance[J]. CATALYSIS SCIENCE & TECHNOLOGY,2020,10(17):5953-5963.
APA	Du, Yanyan.,Yao, Heliang.,Hu, Wenjing.,Tan, Yangchun.,Xu, Yanhui.,...&Li, Jiusheng.(2020).Design of Pt/SAPO-11 bifunctional catalyst with superior metal-acid balance constructedviaa novel one-step pre-loading strategy for enhancingn-dodecane hydroisomerization performance.CATALYSIS SCIENCE & TECHNOLOGY,10(17),5953-5963.
MLA	Du, Yanyan,et al."Design of Pt/SAPO-11 bifunctional catalyst with superior metal-acid balance constructedviaa novel one-step pre-loading strategy for enhancingn-dodecane hydroisomerization performance".CATALYSIS SCIENCE & TECHNOLOGY 10.17(2020):5953-5963.