Temperature control in DRIFT cells used for in situ and operando studies: where do we stand today?

Vibrational spectroscopy is considered a workhorse in heterogeneous catalysis. This group of techniques has allowed an understanding of the structure of the solid catalysts, not only with ex situ methodologies but also with in situ and operando studies. In this perspective, an appraisal of diffuse reflectance infrared Fourier transform spectroscopy (DRIFT) is provided, in particular regarding the heat transfer limitations in the cell, and solutions, which can affect the measurement, with consequences in kinetic studies.

Influence of surface Sn species and hydrogen interactions on the OH group formation over spherical silica-supported tin oxide catalysts

The catalyst stability for propane dehydrogenation can be improved by adding acidic nanomaterials that serve as coke reservoirs.

On isothermality in some commonly used plug flow reactors for X-ray based investigations of catalysts

We compare two reactor setups commonly used to make operando measurements of catalyst behavior using X-rays in terms of the degree to which they may be considered to yield radial and axial isothermality.

Application of modulation excitation-phase sensitive detection-DRIFTS for in situ/operando characterization of heterogeneous catalysts

A new more general method and guidelines for the implementation of modulation excitation-phase sensitive detection-diffuse reflectance Fourier transform spectroscopy (ME-PSD-DRIFTS).