(337e) Highly Dispersion Nickel-Molybdate Bi-Metallic Nanoparticle on Cerium-Zirconium-Yttrium Support for SOFC Application

Mohamed A. Elharati^a, Martinus Dewa^b, Steven R. Saunders^a, M. Grant Norton^a,b, Yohei Miura^c, Song Dong^c, Yosuke Fukuyama^c, Nilesh Dale^d, A. Mohammed Hussain^d,*, Su Ha^a,*

^aVoiland School of Chemical Engineering and Bioengineering, Washington State University,
Pullman, WA 99164-2710, USA

^bSchool of Mechanical and Materials Engineering, Washington State University, P.O. Box 642920, Pullman, WA 99164-2920, USA

^cNissan Research Centre, Nissan Motor Corporation Limited, Kanagawa 237-8523, Japan

^dNissan Technical Centre North America, Farmington Hills, MI-48335, USA

Abstract

The ethanol steam reforming (ESR) is a promising alternative energy production technique from renewable resources for Solid Oxide Fuel Cell (SOFC). Herein, the bimetallic supported NiMo/CZY catalyst demonstrates high catalytic activity and stability toward ethanol steam reforming (ESR) reaction and excellent coking resistance than mono-metallic Ni catalyst without Mo. The catalytic activity of synthesized Ni/CZY with and without Mo was conducted at 800-400 ^oC and an S/C ratio of 2, with a weight-hourly-space-velocity (WHSV) of 156 h^-1. The XRD analysis illustrates that the bimetallic NiMo/CZY catalyst has high resistance to coking and sintering compared to mono-metallic Ni/CZY catalyst. The H₂-TPR showed that NiMo/CZY has a lower reduction temperature than Ni/CZY due to NiMo and CZY support's high interaction. This catalytic enhancement can be associated with the high dispersion of NiMo nanoparticles over CZY support material and the high oxygen storage capacity of CZY support material. This unique material, NiMo/CZY catalyst, was introduced as a micro-reforming active layer on the Ni-YSZ anode supported single SOFC cells. The SOFC cells with a coated layer of and infiltrated NiMo/CZY illustrated high electrochemical performance and stability with a low degradation rate for ~ 100 hours.

Keywords:

Ethanol steam reforming, hydrogen production, Ni-Mo nanoparticles catalysts, CZY oxide support material, SOFC