Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 42, Issue 8, Pages 5114-5124Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2016.11.127
Keywords
Hydrogen; Fuel reforming; Catalysis; Perovskite
Categories
Funding
- National Plan for Science, Technology and Innovation (MAARIFAH)-King Abdulaziz City for Science and Technology-the Kingdom of Saudi Arabia [09-ENE807-05]
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Yttrium strontium titanate (YST) based perovskites with different substitutions of Ti by Ni, Co and Ru have been investigated for the autothermal reforming (ATR) of dodecane to produce hydrogen. The performance of these catalysts have been benchmarked against that of the Ni-Al2O3 commercial catalyst under varying temperature, steam to carbon and oxygen to carbon ratios. Even though high liquid hourly space velocity (LHSV) has been used, all metal doped YST catalysts had shown relatively high hydrogen yield and performed as well as the commercial catalyst with consistently little lower performance for the cobalt based catalyst. Though the undoped yttrium strontium titanate performed well, its resistance to carbon formation was relatively lower than that of all metal doped YST catalysts. All catalysts were further tested for ATR activity under highly severe conditions, at a gas hourly space velocity (GHSV) of 160,000 1/h and liquid hourly space velocity (LHSV) of 18, using a fuel mixture of dodecane and xylene simulating sulfur-free jet fuel. The results showed stable performance for all catalysts with the activities following the order Ru-YST > Co-YST > Ni-YST > Ni-Al2O3. Ru-YST catalyst has shown the highest resistance to carbon formation and sintering. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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