Multiphase catalytic reaction device for testing in situ solid-state nuclear magnetic resonance

Abstract

The invention relates to a multiphase catalytic reaction device for testing in situ solid-state nuclear magnetic resonance, which is a magic angle spinning multiphase catalytic reactor in which an online solid-state nuclear magnetic resonance system, a quadrupole mass-spectrometer, a gas chromatograph and a laser-induced hyperpolarized 129Xe isotope probe are linked for use. The reactor can apply various solid-state nuclear magnetic resonance techniques to track and detect a catalyst structure, reaction intermediates and species with catalyst activity in the catalytic reaction process; reaction products are qualitatively and quantitatively analyzed by the quadrupole mass-spectrometer and the gas chromatograph, so that the performance of the catalyst is evaluated; simultaneously, laser-induced hyperpolarized 129Xe isotope is used as a probe molecule to study the change of the catalyst structure, adsorption positions and diffusion behaviors of various species in the reaction process and the like. In-situ tracking in the catalytic reaction process and the mechanism of the catalytic reaction can be systematically studied through the various techniques.

Description

technical field [0001] The present invention relates to solid state NMR, specifically an in situ continuous flow magic angle spinning NMR, quadrupole mass spectrometry, gas chromatography and laser induced hyperpolarization 129 A heterogeneous catalytic reaction device for combined detection of Xe isotope probes. Background technique [0002] Heterogeneous catalytic reaction processes have long been the basis of chemical and chemical processes. It is closely related to people's life. Scientists from all over the world have tried various methods over the years, trying to study heterogeneous catalytic reactions in situ on various analytical instruments, in order to uncover the secrets in this "black box". However, due to the complexity of the heterogeneous catalytic reaction process, people only understand the details of the heterogeneous catalytic reaction process in some aspects. Solid-state NMR technology has aroused great interest because it is very suitable for studyin...

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Problems solved by technology

However, due to the high difficulty of the experimental technique and the high consumption in the experimental process, there are very few research groups that have been able to realize this technique so far.

Professor Hunger realized the in-situ heterogeneous catalytic reaction on Bruker's solid-state nuclear magnetic resonance spectrometer, but because the solid-state nuclear magnetic probe of Varian, another solid-state nuclear magnetic resonance spectrometer manufacturer in the world, is very different from Bruker's, so far No meaningful in situ continuous flow heterogeneous catalytic reactions have been reported

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