TY - JOUR
T1 - Coke resistant catalyst for hydrogen production in a versatile, multi-fuel, reformer
AU - Gupta, Prashant
AU - Dwivedi, Swarit
AU - van Duin, Adri C.T.
AU - Srinivas, S.
AU - Tanksale, Akshat
N1 - Funding Information:
The authors would like to acknowledge The Tata Power Company Limited for their financial support. The authors would also like to acknowledge Prof. A.K. Suresh at Indian Institute of Technology Bombay (IITB) and Prof. Mainak Majumdar at Monash University for laboratory access. The authors acknowledge the use of instruments and scientific and technical assistance at the Monash Centre for Electron Microscopy, a node of Micoscopy Australia. The authors also thank SAIF (Sophisticated Analytical Instrument Facility) at IITB, for providing access for TEM (HRTEM, SAED) and HAADF-STEM imaging.
Publisher Copyright:
© 2021 Elsevier Inc.
PY - 2021/10
Y1 - 2021/10
N2 - Distributed H2 generation coupled with CO2 capture has the potential to deliver clean fuel for transportation purposes, especially in remote communities. Here we present a novel potassium doped Ni-Pt/alumina catalyst which shows remarkable activity and stability for oxidative steam reforming of multiple fuels. At an optimum potassium loading of 5 wt%, the catalyst was found to be stable for at least 42 h time-on-stream, with frequent start-up and shut-down. The catalyst provided nearly identical conversions of methanol, gasoline and diesel, H2 yield and production rates, demonstrating the flexibility of this catalyst for different feedstocks. Potassium doping in the alumina matrix created higher pore surface area, stabilized the Ni ensemble from sintering at high temperatures and prevented nucleation of coke on the Ni surface, making it coke resistant. A K-Al-Si-O type species that formed during the support synthesis along with presence of Pt species on the surface are believed to be the reasons for the stability of catalyst.
AB - Distributed H2 generation coupled with CO2 capture has the potential to deliver clean fuel for transportation purposes, especially in remote communities. Here we present a novel potassium doped Ni-Pt/alumina catalyst which shows remarkable activity and stability for oxidative steam reforming of multiple fuels. At an optimum potassium loading of 5 wt%, the catalyst was found to be stable for at least 42 h time-on-stream, with frequent start-up and shut-down. The catalyst provided nearly identical conversions of methanol, gasoline and diesel, H2 yield and production rates, demonstrating the flexibility of this catalyst for different feedstocks. Potassium doping in the alumina matrix created higher pore surface area, stabilized the Ni ensemble from sintering at high temperatures and prevented nucleation of coke on the Ni surface, making it coke resistant. A K-Al-Si-O type species that formed during the support synthesis along with presence of Pt species on the surface are believed to be the reasons for the stability of catalyst.
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U2 - 10.1016/j.jcat.2021.08.031
DO - 10.1016/j.jcat.2021.08.031
M3 - Article
AN - SCOPUS:85114049736
SN - 0021-9517
VL - 402
SP - 177
EP - 193
JO - Journal of Catalysis
JF - Journal of Catalysis
ER -