Details

Autor(en) / Beteiligte

• Yadav, Abhimanyu K.
• Vaidya, Prakash D.

Titel

A study on the efficacy of noble metal catalysts for butanol steam reforming

Ist Teil von

• International journal of hydrogen energy, 2019-10, Vol.44 (47), p.25575-25588

Ort / Verlag

Elsevier Ltd

Erscheinungsjahr

2019

Link zum Volltext

Quelle

Elsevier ScienceDirect Journals Complete

Beschreibungen/Notizen

• Biomass-derived oxygenates such as biobutanol are potential candidates for renewable hydrogen (H2) production. In this work, the model compound butanol was chosen as feed for H2 production. Steam reforming of butanol was investigated at mild temperatures (623–773 K) over two noble metal catalysts Pt/Al2O3 and Pd/Al2O3 renowned for their reforming activity. Trials were performed in a fixed-bed reactor using 1–4 wt% butanol solutions as feedstock. At T = 773 K and W/FA0 = 166.8 g h/mol (here, W and FA0 denote mass of catalyst and molar flow rate of butanol in the feed), butanol conversion was almost complete over both catalysts. However, turnover frequency observed over Pt/Al2O3 (TOFH2 = 45.5 min−1) was higher than that achieved using Pd/Al2O3 (TOFH2 = 21.3 min−1). The apparent energy of activation for the disappearance of butanol over Pt/Al2O3 and Pd/Al2O3 was found to be 22.9 and 30.2 kJ/mol respectively. Thus, this work has provided key insights into H2 production from butanol using noble metals at mild reaction conditions. •Hydrogen production from steam reforming of butanol was studied over Pt/Al2O3 and Pd/Al2O3 catalysts.•Pt/Al2O3 catalyst was more active and selective for hydrogen production.•H2 yield and butanol conversion increased with the rise in space time and S/C ratio.•Kinetics of butanol steam reforming was investigated.