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Sorption‐Enhanced Steam Reforming of Ethylene Glycol over Dual Functional Hydrotalcite Materials Promoted with Pt and Ru
Author(s) -
Dewoolkar Karan D.,
Vaidya Prakash D.
Publication year - 2017
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201701007
Subject(s) - materials science , sorbent , steam reforming , hydrotalcite , chemical engineering , ethylene glycol , hybrid material , catalysis , hydrogen production , adsorption , chemistry , organic chemistry , nanotechnology , engineering
Catalytic steam reforming of renewable bio‐oxygenates coupled with on‐site carbon dioxide (CO 2 ) capture is a potential option for sustainable hydrogen (H 2 ) production. The current work focuses on high‐purity H 2 production over modified hydrotalcite (HTlc) based multi‐functional hybrid materials via sorption‐enhanced steam reforming of ethylene glycol. The unpromoted hybrid material (HM1) was copper‐based HTlc, integrated with nickel. HM1 was promoted with platinum and ruthenium to yield two novel hybrid materials (Pt‐HM1 and Ru‐HM1). The performance of HM1, Pt‐HM1 and Ru‐HM1 was compared. Our lab‐made hybrid materials exhibited encouraging performance, e. g., improved H 2 production, less by‐product formation, long‐term stability and no coking. Particularly, promotion of the hybrid materials with platinum and ruthenium proved beneficial, due to the high H 2 concentration in the product stream (98.6 and 93.2% for Pt‐HM1 and Ru‐HM1). Interestingly, the adsorption capacity of Ru‐HM1 (1.3 mol CO 2 kg sorbent −1 ) was higher than that of Pt‐HM1 (0.93 mol CO 2 kg sorbent −1 ) and HM1 (0.43 mol CO 2 kg sorbent −1 ) at their optimal conditions. The cyclic resilience of the hybrid materials was also encouraging. Ru‐HM1, Pt‐HM1 and HM1 remained durable for 22, 16 and 8 cycles, correspondingly. Finally, a likely reaction mechanism followed over the hybrid materials was proposed.