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Low temperature catalytic performance of nanosized Ti-Ni-O for oxidative dehydrogenation of propane to propene

机译:纳米Ti-Ni-O对丙烷氧化脱氢制丙烯的低温催化性能

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摘要

Nanosized Ti-Ni-O catalysts prepared by a modified sol-gel method have been investigated in the oxidative dehydrogenation of propane (ODP) to propene. At 300 degrees C the yield to propene of 12.1 % was obtained on 9.1 wt.% Ti-Ni-O catalyst with the selectivity of 43%. The continued variety of lattice parameter and variation of chemical value of nickel and titanium ion on the surface indicates that there are strong interactions of TiO2 and NiO. The decreased low temperature oxygen desorption and the weaker reducibility seems to be responsible for the decreased activity and enhanced selectivity of propane oxidative dehydrogenation over Ti-Ni-O catalysts. (c) 2005 Elsevier B.V. All rights reserved.
机译:在丙烷(ODP)氧化脱氢成丙烯的过程中,已经研究了通过改进的溶胶-凝胶法制备的纳米Ti-Ni-O催化剂。在300℃下,在9.1重量%的Ti-Ni-O催化剂上以43%的选择性获得12.1%的丙烯收率。晶格参数的连续变化以及表面镍和钛离子化学值的变化表明TiO2和NiO之间存在强相互作用。降低的低温氧气脱附和较弱的还原性似乎是造成活性降低和丙烷在Ti-Ni-O催化剂上氧化脱氢选择性提高的原因。 (c)2005 Elsevier B.V.保留所有权利。

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