Affiliation:
1. Chemical Engineering Department College of Engineering King Saud University Riyadh Saudi Arabia
2. Department of Chemistry Indus University Ahmedabad Gujarat India
3. School of Chemistry and Chemical Engineering Queen's University Belfast UK
4. King Abdulaziz City for Science and Technology (KACST) Riyadh Saudi Arabia
Abstract
AbstractRh‐promoted YZr‐supported Ni catalyst (5Ni/YZr) is investigated for DRM and characterized with X‐ray diffraction, Raman, infrared spectroscopy, cyclic reduction–oxidation–reduction temperature programmed experiment, thermogravimetry, and transmission electron microscope. Over 5Ni/YZr, some active sites become inactive under the CO2 stream and limit H2 yield to ∼71%. Upon 4 wt% Rh addition over 5Ni/YZr; more than one type of stable active sites (Rh and Ni) generates, moderate basic sites are enhanced, wide ranges of CO2‐interacted surface species (especially bidentate CO2‐adsorbed species) are grown and graphitic carbon proportion over spent catalyst declines. This resulted in 87.35% H2 yield and 86.73% CO yield up to 420 min. 5Ni4Rh/YZr catalyst maintains ∼80% H2 yield at the end of 27 h of DRM reaction.
Subject
General Energy,Safety, Risk, Reliability and Quality
Cited by
1 articles.
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