Fourier transform infrared (DRIFT) investigation of glass-covered samples. Study of hydrogen spillover on zeolites

Abstract Glass-covered samples can be investigated in the mid-IR region by DRIFT spectroscopy down to 2200 cm −1 . These samples are leak-proof and permit investigations over long periods. HD exchange due to hydrogen spillover was investigated on Pt-NaY/HNaY couples. The HD exchange on OH groups was found to take place at room temperature. All types of OH groups of the zeolite are involved. Water is formed as a by-product of the HD exchange owing to hydrogen spillover. Charged particles seem to take part in the spillover process. The application of a magnetic field reduces the diffusion of the spillover hydrogen inside the supercage of the Y zeolite.