Embedding Pt-SnO Nanoparticles into MIL-101(Cr) Pores: Hydrogen Production with Low Carbon Monoxide Content from a New Methanol Steam Reforming Catalyst

摘要

The catalyst Pt-SnO@MIL-101(Cr) was prepared using the cis- PtCl(SMe2)2(SnCl3) complex as a single precursor and charac- terized by inductively coupled plasma optical emission spectro- scopy, (ICP-OES), X-ray powder diffraction (XRD), BET surface area analysis (SBET), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), field-emission scan- ning electron microscopy (FE-SEM), and temperature program reduction (TPR). A new complex, cis-PtCl(SMe2)2(SnCl3), was synthesized from the reaction of PtCl2(SMe2)2 with SnCl2 and characterized by thermogravimetric analysis (TGA), ICP-OES, and 1 HNMR spectroscopy and used as the source of metals for preparation of the catalysts. The fabricated catalyst, Pt- SnO@MIL-101(Cr), with 10.2%, 19.7%, and 28.9% platinum loadings were used in a steam reforming of methanol (MSR) reaction using a microstructure monolith reactor in the temper- ature range of 150-300°C. A high methanol conversion with a good selectivity of H2 and low CO selectivity was achieved in light of the stability of the catalyst with a small amount of coke formation in the monolith system.