Application of BICOVOX catalyst for hydrogen production from ethanol

作者：Sharma S; Patil B; Pathak A; Ghosalkar S; Mohanta H K; Roy B^*

来源：Clean Technologies and Environmental Policy, 2018, 20(4): 695-701.

DOI：10.1007/s10098-017-1394-1

• BICOVOX catalyst
• Hydrogen production
• Low-temperature steam reforming
• Ethanol

Catalytic activity of cobalt-doped bismuth vanadate [Bi-4(V0.90Co0.10)(2)O11-delta ; BICOVOX] powder, prepared by a solution combustion synthesis and calcined at 800 A degrees C (BICOVOX-800), for hydrogen production using low-temperature steam reforming of ethanol, has been reported in this paper. The effects of reaction temperature (250-400 A degrees C) and feed concentration (H2O/EtOH = 2.5:1 and 23:1 mol ratio) on the steady-state ethanol conversion and selectivity of H-2, CO2, CO, and CH4 have been investigated (up to 30 h). It is observed that with an increase in reaction temperature and H2O/EtOH mole ratio, H-2 and CO2 selectivity increases and CO and CH4 selectivity decreases. The maximum H-2 selectivity and ethanol conversion are observed to be 63 and 88%, respectively, for H2O/EtOH = 23:1 mol ratio at 400 A degrees C. The XRD results show that the fresh BICOVOX-800 has pure gamma-phase and is highly crystalline. The used catalyst (more than 150 h total) is detected to have less crystallinity and to partially decompose into Bi2O3 and BiVO4 phases.

• 出版日期2018-5