Chinese Academy of Sciences

Yongna Zhang

Can Li

Zongxuan Jiang

Hongying Lv

Lu Wang

Yuliang Zhang

Boyu Zhang

Feng Lin

Donge Wang

The invention discloses a multi-metallic bulk catalyst with layered structure, wherein the metals in the multi-metallic bulk catalyst is consisted of a Group VIII metal M, at least one metal Mwith the valence of +3 and at least two Group VIB metals M+M, wherein (the mole number of M+the mole number of M):(the mole number of M+the mole number of M) is from 1:9 to 9:1; the mole number of M:the mole number of Mis from 1:5 to 5:1; and the mole number of M:the mole number of Mis from 1:5 to 5:1. The invention also discloses the preparation method and use of the above catalyst. The invention is use for the hydrodesulfurization of diesel distillate including 4,6-dimethyldibenzothiophene, wherein the catalyst exhibits a extreme high hydrodesulfurization activity. Thus, the ultra-deep hydrodesulfurization is achieved and the cost of the bulk catalyst is reduced.

Multi-metallic bulk catalyst with layered structure and method for the preparation and use thereof

This invention relates to a visible-light-responsive photocatalyst for photocatalyticly oxidation desulphurization and method for preparation and application thereof. The catalyst is comprised of one type of metal M, one type of metal oxide MOand BiVOas the supporter, wherein the mass ratio of the sum of the two types of metal (M+M) to BiVOis from 1:5000 to 1:50; the mass ratio of the type of metal Mto the type of metal Mis from 1:50 to 50:1. The catalyst is used in the photocatalytic oxidation desulphurization. Under mild condition (room temperature, 1 atm), using Oas the oxidant and xenon lamp (wavelength 420 nm&#x3c;&#x3bb;&#x3c;700 nm) as the light source, avoid the oil's absorption of light (mainly in the violet area which is below 420 nm), the desulphurization ratio of thiophene can be above 90%, meanwhile the oil won't be excited. The sulfur in thiophene can be oxidized to SOand absorbed by the absorbent after escaped from the reaction system. Thus extraction of the conventional oxidative desulphurization can be saved to lower the operation cost. The visible-light-responsive photocatalyst can be widely used in oil compared with the UV-light-responsive photocatalyst. We can recover the photocatalyst after the reaction by subsiding or centrifugation.

Visible light catalyst for removing sulfur-containing compounds in fuel oil, and preparation and use

A catalyst for the desulfurization and deodorization of gasoline, which is expressed by the formula: QBH[AMO], where: Q denotes a quaternary ammonium cation consisting of RRRRN, in which R, R, R, and Reach denotes independently a Cto Csaturated alkyl group, respectively, provided that at least one of R, R, R, and Rdenotes a Cto Csaturated alkyl group; B denotes a metal cation of Naor/and K; H denotes a hydrogen atom; A denotes a central atom of B, P, As, Si or Al; M denotes a coordinated atom of W or Mo; O denotes an oxygen atom; 1&#x2266;l&#x2266;10, 0&#x2266;m&#x2266;3, 0&#x2266;n&#x2266;3, l+m+n&#x2266;14, x=1 or 2, 9&#x2266;y&#x2266;18, 34&#x2266;z&#x2266;62, and l, m, n, y and z all are integers. A method of the desulfurization and deodorization of gasoline by using the catalyst comprises the steps of: mixing the catalyst and an aqueous solution of hydrogen peroxide, and then adding the gasoline to react them with stirring under conditions of 25 to 90&#xb0; C. and 0.1 to 1 MPa for 10 to 180 min. An odorless gasoline can be obtained through settlement or centrifugation, and the catalyst is recovered.

Catalyst for desulfurization and deodorization of gasoline and method for preparation of the same and use thereof

A catalyst for ultra-deep desulfurization of diesel via oxidative distillation is an amphiphilic oxidative catalyst, which is expressed as Q[XMO], wherein 1&#x2266;m&#x2266;12; 9&#x2266;n&#x2266;18; 34&#x2266;q&#x2266;62; Q is a quaternary ammonium cation; X is P, Si, As or B; and M is Mo) or W. A desulfurization method comprises a) mixing well a diesel, the amphiphilic catalyst, and hydrogen peroxide, reacting for 10-300 minutes at ambient temperature and normal pressure, transforming the sulfur-containing compounds in the diesel into sulfone to obtain an oxidized diesel; b) distilling the oxidized diesel obtained in step a) under reduced pressure to obtain the ultra-low sulfur diesel having a sulfur content of less than 10 ppm; and c) separating and recovering the catalyst and sulfone.

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Dalian, China

Yongna Zhang