Applications of neutron scattering to heterogeneous catalysis

6th European Conference on Neutron Scattering

Parker, Stewart F.^1 ; Lennon, David^2

ISIS Facility, STFC Rutherford Appleton Laboratory, Chilton, Didcot

OX11 0QX, United Kingdom^1

School of Chemistry, Joseph Black Building, University of Glasgow, Glasgow

G12 8QQ, United Kingdom^2

关键词: Co oxidation;    Direct geometry;    Final energy;    Heterogeneous catalyst;    Neutron vibrational spectroscopy;    Ni/Al2O3 catalyst;    Operando;    Reforming of methane;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/746/1/012066/pdf
DOI  :  10.1088/1742-6596/746/1/012066

来源: IOP

【 摘 要 】

Historically, most studies of heterogeneous catalysts that have used neutron vibrational spectroscopy have employed indirect geometry instruments with a low (-1) final energy. In this paper we examine the reasons why this has been the case and highlight the advantages and disadvantages of this approach. We then show how some of these may be overcome by the use of direct geometry spectrometers. We illustrate the use of direct geometry spectrometers with examples from reforming of methane to synthesis gas (CO + H2) over Ni/Al2O3catalysts and an operando study of CO oxidation. We conclude with a proposal for a unique instrument that combines both indirect and direct geometry spectrometers.