Topic
MCM-41
About: MCM-41 is a research topic. Over the lifetime, 2355 publications have been published within this topic receiving 91416 citations.
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TL;DR: In this paper, a shape-selective catalyst for the Friedel-Crafts alkylation of benzene with linear 1-olefins with a chain length of 6 to 16 carbon atoms was proposed.
51 citations
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TL;DR: In this article, the effects of pore characteristics of supports including unimodal and bimodal pore structures, loading amount of Fe, and reaction temperature on the catalytic performance were investigated.
51 citations
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TL;DR: In this article, all the catalysts studied were active in the NO decomposition reaction and were characterized by X-ray diffraction, BET, SEM, UV-DRS and hydrogen chemisorption.
Abstract: Palladium catalysts supported on SiO2, MCM-41, [Al]-MCM-41 and on Al2O3-thin-layer- modified SiO2 and MCM-41 were investigated for the direct decomposition of nitric oxide. The catalysts were characterized by X-ray diffraction, BET, SEM, UV-DRS and hydrogen chemisorption. All the catalysts studied were active in the NO decomposition reaction.
51 citations
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TL;DR: In this article, the effect of plasma treatment on the catalytic performance of palladium (Pd) catalysts in methane combustion with the ordered mesoporous molecular sieve Al-MCM-41 as the model support was investigated.
Abstract: This work aimed at elucidating the beneficial effect of plasma treatment on the catalytic performance of palladium (Pd) catalysts in methane combustion with the ordered mesoporous molecular sieve Al-MCM-41 as the model support. The plasma treated Pd/Al-MCM-41 catalyst exhibited a higher initial activity and a better stability in comparison with the untreated counterpart catalyst. To clarify the plasma effect, the catalysts were characterized by N2 sorption analysis, X-ray diffraction (XRD), temperature-programmed desorption of ammonia (NH3-TPD), pyridine adsorption-infrared spectroscopy (Py-IR), high resolution-transmission electron microscopy (HR-TEM), X-ray photoelectron spectroscopy (XPS) and temperature-programmed reduction (CH4-TPR) experiments. The results obtained confirmed that palladium oxide (PdO) was the active phase. Plasma treatment enhanced the acidity of catalyst and improved the dispersion of PdO particles, which lead to a higher initial activity. The better stability for plasma treated Pd-based catalyst was proved to be closely related to the stronger interaction between palladium oxide and the molecular sieve support. In addition, the sintering of PdO particles over the plasma treated catalyst was not significant during the stability test. These findings may provide useful guidelines for further catalyst design for methane combustion.
51 citations
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TL;DR: A palladium bipyridyl complex anchored onto nanosized mesoporous silica MCM-41 catalyzed the cross-coupling of aryl iodides or bromides with Grignard reagents to provide the corresponding biaryls in high yields as mentioned in this paper.
51 citations