Superdeep hydrodesulfurization catalyst and preparation method thereof
A desulfurization catalyst, deep hydrogenation technology, applied in molecular sieve catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc. problems, to increase the pore size and pore volume, to avoid uneven distribution of molecular sieves, and to improve the effect of pore structure
Active Publication Date: 2011-05-11
CHINA PETROLEUM & CHEM CORP +1
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The invention discloses a bulk phase superdeep hydrodesulfurization catalyst and a preparation method thereof. The catalyst comprises NixWyOz which is a composite oxide, MoO3 and aluminum oxide and microporous and mesoporous composite molecular sieves. The method comprises the following steps of: adding proper quantity of water-solubility nitrogenous compounds in the precipitation process of Ni, W and Al, gelatinating, adding serous fluid of the composite molecular sieves, aging, beating the mixture with the MoO3, and forming and activating to prepare the bulk phase superdeep hydrodesulfurization catalyst. By the method, a pore structure of the catalyst is improved, so that more metal active sites are exposed from the surface of the catalyst to improve the utilization rate of active metal, and the composite molecular sieves contact the hydrogenated active metal uniformly and better coordinate with the hydrogenated active metal to produce the performance of the composite molecular sieves fully and achieve the effect of superdeep desulfuration of diesel oil, and particularly, the effect of processing macromolecular distillate with more content is more obvious.
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