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Vapor-phase transport (VPT) modification of ZSM-5/SiC foam catalyst using TPAOH vapor to improve the methanol-to-propylene (MTP) reaction
Jiao, Yilai; Fan, Xiaolei; Perdjon, Michal; Yang, Zhenming; Zhang, Jinsong; Zhang, JS (reprint author), Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.
2017-09-05
Source PublicationELSEVIER SCIENCE BV
ISSN0926-860X
Volume545Pages:104-112
AbstractTetrapropylammonium hydroxide (TPAOH) was introduced in the vapor phase to perform the vapor-phase transport (VPT) modification of the structured ZSM-5 supported on SiC foam (ZSM-5/SiC foam) catalyst. An optimum precursor concentration of 0.5 M TPAOH could effectively convert the amorphous aluminosilicate binder to the zeolitic phase with improved intracrystal mesopores, nanosized crystals (ca. 100 nm), high concentration of acidity sites (83 mmol g(-1)) as well as a high value of the relative acidity (0.7). Combined with the intrinsic property of macroscopic SiC foams such as the low pressure drop and the high thermal conductivity (14 W m(-1) K-1 at 773 K), TPAOH VPT modified ZSM-5/SiC foam catalyst demonstrated an excellent activity in the catalytic methanol-to-propylene (MTP) reaction, surpassing the state-of-the-art hierarchal ZSM-5 monolith catalyst. The catalyst showed an extended activity for ca. 970 h (> 95% methanol conversion) with the high selectivity to the propylene (> 45%). The coke formation was significantly retarded (ca. 2.1 x 10(-2) wt.% h(-1)) due to the enhanced transport phenomena within the developed structured catalyst.; Tetrapropylammonium hydroxide (TPAOH) was introduced in the vapor phase to perform the vapor-phase transport (VPT) modification of the structured ZSM-5 supported on SiC foam (ZSM-5/SiC foam) catalyst. An optimum precursor concentration of 0.5 M TPAOH could effectively convert the amorphous aluminosilicate binder to the zeolitic phase with improved intracrystal mesopores, nanosized crystals (ca. 100 nm), high concentration of acidity sites (83 mmol g(-1)) as well as a high value of the relative acidity (0.7). Combined with the intrinsic property of macroscopic SiC foams such as the low pressure drop and the high thermal conductivity (14 W m(-1) K-1 at 773 K), TPAOH VPT modified ZSM-5/SiC foam catalyst demonstrated an excellent activity in the catalytic methanol-to-propylene (MTP) reaction, surpassing the state-of-the-art hierarchal ZSM-5 monolith catalyst. The catalyst showed an extended activity for ca. 970 h (> 95% methanol conversion) with the high selectivity to the propylene (> 45%). The coke formation was significantly retarded (ca. 2.1 x 10(-2) wt.% h(-1)) due to the enhanced transport phenomena within the developed structured catalyst.
description.department[jiao, yilai ; yang, zhenming ; zhang, jinsong] chinese acad sci, inst met res, 72 wenhua rd, shenyang 110016, liaoning, peoples r china ; [fan, xiaolei] univ manchester, sch chem engn & analyt sci, oxford rd, manchester m13 9pl, lancs, england ; [jiao, yilai ; perdjon, michal] cardiff univ, cardiff catalysis inst, ctr doctoral training catalysis, sch chem, pk pl, cardiff cf10 3at, s glam, wales
KeywordVapor-phase Transport (Vpt) Tetrapropylammonium Hydroxide (Tpaoh) Zsm-5 Sic Foam Structured Catalyst Methanol-to-propylene (Mtp) Thermal Conductivity
Subject AreaChemistry, Physical ; Environmental Sciences
Funding OrganizationNational 863 Program of China [2012AA030304]; Engineering and Physical Sciences Research Council [EP/R000670/1]; China Scholarship Council (CSC) [201604910181]; University of Manchester
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/79105
Collection中国科学院金属研究所
Corresponding AuthorZhang, JS (reprint author), Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China.
Recommended Citation
GB/T 7714
Jiao, Yilai,Fan, Xiaolei,Perdjon, Michal,et al. Vapor-phase transport (VPT) modification of ZSM-5/SiC foam catalyst using TPAOH vapor to improve the methanol-to-propylene (MTP) reaction[J]. ELSEVIER SCIENCE BV,2017,545:104-112.
APA Jiao, Yilai,Fan, Xiaolei,Perdjon, Michal,Yang, Zhenming,Zhang, Jinsong,&Zhang, JS .(2017).Vapor-phase transport (VPT) modification of ZSM-5/SiC foam catalyst using TPAOH vapor to improve the methanol-to-propylene (MTP) reaction.ELSEVIER SCIENCE BV,545,104-112.
MLA Jiao, Yilai,et al."Vapor-phase transport (VPT) modification of ZSM-5/SiC foam catalyst using TPAOH vapor to improve the methanol-to-propylene (MTP) reaction".ELSEVIER SCIENCE BV 545(2017):104-112.
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