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题名: Vapor-phase transport (VPT) modification of ZSM-5/SiC foam catalyst using TPAOH vapor to improve the methanol-to-propylene (MTP) reaction
作者: Jiao, Yilai;  Fan, Xiaolei;  Perdjon, Michal;  Yang, Zhenming;  Zhang, Jinsong
发表日期: 2017-9-5
摘要: 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.
Appears in Collections:中国科学院金属研究所_期刊论文

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Recommended Citation:
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.

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