Efficient hydrogen production by low-temperature steam reforming of propane using catalysts with very small amounts of Pt loaded on NiMn2O4 particles. (21st August 2020)

• Record Type: Journal Article
• Authors: Heo, Jun Neoung; Son, Namgyu; Shin, Jongmin; Do, Jeong Yeon; Kang, Misook
• Is Part Of: International journal of hydrogen energy. Volume 45:Number 41(2020)
• Page Start: 20904
• Page End: 20921
• Publication Date: 2020-08-21
• Subjects: Hydrogen production -- Low-temperature steam reforming of propane -- Pt loading -- NiMn2O4 spinel -- PtNi; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2020.05.247
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: The purpose of the present work is to unveil the effect of very small amounts of Pt loaded onto a NiMn2 O4 spinel catalyst on the chemical characteristics and catalytic activity for low-temperature steam reforming (LTSR) of propane. In the H2 -TPR curves of the Pt-loaded catalysts, the reduction corresponding to Pt 2+ → Pt 0 occurred largely at approximately 200–350 °C. It is due to the high accumulation of hydrogen on the PtNi alloy. X-ray photoelectron spectroscopy measurements proved that the PtNi component acted as the active species. The catalysts with Pt loaded on 40NiMn2 O4 /60γ-Al2 O3 show higher propane conversion due to the larger metal interface area created between Pt, Ni, and MnO. In particular, the 40Pt0.025 NiMn2 O4 /60γ-Al2 O3 catalyst maintained a very low amount of carbon deposition, a stable propane conversion of 100% and a hydrogen production capacity of 60% at 450 °C, even after 100 h of LTSR. Graphical abstract: Image 1 Highlights: Bimetallic NiPt acted as the active species for LTSR of propane on 40Ptx NiMn2 O4 /60γ−Al2 O3 . Unlike normal propane steam reforming, the LTSR of propane is performed at 450 °C. 40Pt0.025 NiMn2 O4 /60γ−Al2 O3 shows 100%-propane conversion and 60%-hydrogen production. After LTSR, the amount of carbon deposited on 40Ptx NiMn2 O4 /60γ-Al2 O3 is very small.