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Mercaptan etherification catalyst and preparation method and application thereof

A catalyst and mercaptan technology, which is applied in the direction of sulfide preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of unstable activity, loss of effective carbon resources, etc., and achieve high selectivity effect

Active Publication Date: 2016-12-07
BEIJING ENZE FULAI TECH +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] Chinese patent applications CN104511287A, CN102140363A and WO2001021734, US6444118 and other patents respectively disclose the preparation method of mercaptan and diene etherification catalyst, basically based on Al 2 o 3 or SiO 2 -Al 2 o 3 It is prepared by supporting metal Ni or noble metal Pd on the carrier, and has certain catalytic activity for the etherification of mercaptans and dienes. While forming sulfide, there are still a large number of diolefins undergoing polymerization reaction to form macromolecular compounds to cover the active center of the catalyst, making its activity unstable, and at the same time losing effective carbon resources

Method used

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  • Mercaptan etherification catalyst and preparation method and application thereof

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Embodiment 1

[0027] Embodiment 1 of the present invention is used to prepare the catalyst of mercaptan etherification, and it is made of the raw material of following mass percentage: In step (1), be 55% NiO, 45% SiO 2 NiO-SiO 2 Powder; in the step (2), it is the NiO-SiO obtained in the 80% step (1) 2 Powder, 8% NiO, 12% Al 2 o 3 .

[0028] The preparation method comprises the following steps:

[0029] (1) Weigh 214.1g of nickel nitrate hexahydrate and 135g of silica sol, mix them with an appropriate amount of water, dry them supercritically, and roast at 550°C for 4 hours to obtain nickel oxide-silicon oxide powder.

[0030] (2) Weigh 80g of NiO-SiO prepared in the above step (1) 2 Powder, 8g NiO and 12g Al 2 o 3 Powder, added to dilute nitric acid aqueous solution, mixed and kneaded evenly, then extruded into strips;

[0031] (3) drying the extruded product in the above step (2) at 100° C., and roasting at 550° C. for 4 hours to obtain a finished mercaptan etherification catalyst...

Embodiment 2

[0033] Embodiment 2 of the present invention is used to prepare the catalyst of mercaptan etherification, and it is made by the raw material of following mass percentage: In step (1), be 60%NiO, 40%SiO 2 NiO-SiO 2 Powder; in the step (2), it is the NiO-SiO obtained in the 80% step (1) 2 Powder, 10% NiO, 10% Al 2 o 3 .

[0034] The preparation method comprises the following steps:

[0035] (1) Weigh 233.5g of nickel nitrate hexahydrate and 120g of silica sol, mix them with an appropriate amount of water, dry them supercritically, and roast at 550°C for 4 hours to obtain nickel oxide-silicon oxide powder.

[0036] (2) Weigh 80g of NiO-SiO prepared in the above step (1) 2 Powder, 10g NiO and 10g Al 2 o 3 Powder, added to dilute nitric acid aqueous solution, mixed and kneaded evenly, then extruded into strips;

[0037] (3) drying the extruded product in the above step (2) at 100° C., and roasting at 550° C. for 4 hours to obtain a finished mercaptan etherification catalyst...

Embodiment 3

[0039] Embodiment 3 of the present invention is used to prepare the catalyst of mercaptan etherification, and it is made of the raw material of following mass percentage: In step (1), be 75% NiO, 25% SiO 2 NiO-SiO 2 Powder; in the step (2), it is the NiO-SiO obtained in the 76% step (1) 2 Powder, 9.5% NiO, 14.5% Al 2 o 3 .

[0040] The preparation method comprises the following steps:

[0041] (1) Weigh 291.9g of nickel nitrate hexahydrate and 135g of silica sol, mix them with an appropriate amount of water, dry them supercritically, and roast at 550°C for 4 hours to obtain nickel oxide-silicon oxide powder.

[0042] (2) Weigh 76g of NiO-SiO prepared in the above step (1) 2 Powder, 9.5g NiO and 14.5g Al 2 o 3 Powder, added to dilute nitric acid aqueous solution, mixed and kneaded evenly, then extruded into strips;

[0043] (3) drying the extruded product in the above step (2) at 100° C., and roasting at 550° C. for 4 hours to obtain a finished mercaptan etherification ...

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Abstract

The invention relates to a mercaptan etherification catalyst and a preparation method and application thereof. The method comprises the steps that 75%-85% of NiO-SiO2 powder, 5%-10% of NiO and the balance Al2O3 are taken, a dilute nitric acid solution is added, all the materials are mixed to be uniform, drying and calcining are conducted after extrusion molding is conducted, and the catalyst is obtained, wherein the NiO-SiO2 powder is prepared through a sol-gel method. The mercaptan etherification catalyst has rich weak acid sites, high mercaptan etherification activity, high activity stability and high selectivity.

Description

technical field [0001] The invention belongs to the technical field of mercaptan etherification, and in particular relates to a mercaptan etherification catalyst and its preparation method and application, in particular to a catalyst for catalytic cracking of gasoline mercaptans and diolefins therein to react to generate thioethers And its preparation method and application. Background technique [0002] FCC gasoline is the main component of my country's gasoline pool, accounting for more than 70%. Sulfur compounds and olefins in FCC gasoline are the main sources of sulfur and olefins in finished gasoline, so reducing the sulfur and olefin content in FCC gasoline is the key to producing clean gasoline. [0003] For the removal of mercaptans in FCC gasoline, there are mainly Merox deodorization and caustic deodorization processes, but these two processes can only oxidize mercaptans to disulfides. Although the odor of oil is removed, the sulfur content is not high. Variety. ...

Claims

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Application Information

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IPC IPC(8): B01J23/755C07C321/18C07C319/18C10G45/06C10G45/36
CPCC10G45/06C10G45/36C07C319/18B01J23/002B01J23/755B01J2523/00C10G2300/4087B01J35/23B01J2523/31B01J2523/41B01J2523/847C07C321/18
Inventor 姚志龙江雨城张芳周明孙培永张胜红
Owner BEIJING ENZE FULAI TECH
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