Sorption-Enhanced Steam Reforming of Glycerol over Ni-hydrotalcite: Effect of Promotion with Pt

被引：27

作者：

Dewoolkar, Karan D. ^{[1
]}

Vaidya, Prakash D. ^{[1
]}

机构：

[1] Inst Chem Technol, Dept Chem Engn, Nathalal Parekh Marg, Bombay 400019, Maharashtra, India

来源：

CHEMCATCHEM | 2016年 / 8卷 / 22期

关键词：

glycerol; hydrogen; sorption-enhanced reforming; SUPPORTED METAL-CATALYSTS; HIGH-PURITY HYDROGEN; FIXED-BED REACTOR; THERMODYNAMIC ANALYSIS; PRODUCE HYDROGEN; HYBRID MATERIALS; ETHANOL; CU; MG; AL;

D O I：

10.1002/cctc.201600793

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Sorption-enhanced steam reforming of glycerol (SESRG) is a promising method for the sustainable production of hydrogen (H-2). In this work, composites of Ni and cationic-modified hydrotalcite (HTlc) were promoted with Pt, thus resulting in two novel hybrid materials Pt-NiMgHTlc and Pt-NiCuHTlc. Activity trials for SESRG were performed in a fixed-bed reactor in the range 673-873K and it was found that the promotion with Pt improved H-2 purity and multi-cycle durability. The best results were achieved when Pt-NiCuHTlc was employed at T = 823 K: a H-2 concentration of 98.7 mol% and adsorption capacity of 1.34 mol CO2/kg sorbent was achieved. When the multi-cycle performance was tested for 20 cycles, it was found that NiMgHTlc, NiCuHTlc, Pt-NiMgHTlc, and Pt-NiCuHTlc were stable for 5, 8, 13, and 18 cycles. Finally, a likely reaction pathway for SESRG over the investigated multifunctional materials was proposed.

引用

页码：3499 / 3509

页数：11

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