Low-temperature sulfur alcohol etherification catalyst as well as preparation method and application thereof

A catalyst and mercaptan technology, applied in physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of high catalyst production cost and achieve good thiol etherification The effect of reaction performance, moderate reaction conditions, and high reactivity

Inactive Publication Date: 2017-05-31
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these four types of catalysts use noble metal Pd or high-loaded Ni as the active component of the catalyst, resulting in high production costs of the catalyst.

Method used

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  • Low-temperature sulfur alcohol etherification catalyst as well as preparation method and application thereof
  • Low-temperature sulfur alcohol etherification catalyst as well as preparation method and application thereof
  • Low-temperature sulfur alcohol etherification catalyst as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] In this example, a Ni-Mo / Al was prepared by impregnation loading method. 2 o 3 Catalyst, it comprises the following steps:

[0050] al 2 o 3 Preparation of the carrier:

[0051] Weigh 100g pseudo-boehmite powder (Al 2 o 3 Dry basis content is 70wt%), adding accounted for Al 2 o 3 3.5g of 5wt% squash powder additive on a dry basis, 80g of an aqueous solution of nitric acid with a mass concentration of 5wt%, mixed and rolled to form a plastic powder, and a cylindrical strip with a diameter of 1.5mm was prepared with an extruder, and dried at 110°C 8h, calcination at 500°C for 2h to prepare Al 2 o 3 carrier.

[0052] Loading of active ingredients:

[0053] Account for catalyst weight 10wt% by NiO content on the final catalyst, get 9.27g nickel nitrate, MoO 3 Content accounts for catalyst weight 3wt%, gets 0.88g ammonium molybdate, and 13.27g deionized water is made into solution, then with 20g above-mentioned Al 2 o 3 The carrier was impregnated in equal volu...

Embodiment 2

[0055] In this example, a Ni-Mo-W / Al was prepared by impregnation loading method 2 o 3 Catalyst, it comprises the following steps:

[0056] al 2 o 3 Preparation of the carrier:

[0057] Weigh 100g pseudo-boehmite powder (Al 2 o 3 Dry basis content is 70wt%), adding accounted for Al 2 o 3 3.5g of 5wt% squash powder additive on a dry basis, 80g of an aqueous solution of nitric acid with a mass concentration of 5wt%, mixed and rolled to form a plastic powder, and a cylindrical strip with a diameter of 1.5mm was prepared with an extruder, and dried at 110°C 8h, at a heating rate of 2°C / min to 500°C and roasted for 2h to prepare Al 2 o 3 carrier.

[0058] Loading of active ingredients:

[0059] Account for catalyst weight 10wt% by NiO content on the final catalyst, get 9.27g nickel nitrate, MoO 3 Content accounts for catalyst weight 3wt%, gets 0.88g ammonium molybdate, WO 3 The content accounts for 3wt% of the catalyst weight. Take 0.78g ammonium tungstate and 13.27g d...

Embodiment 3

[0061] In this example, a kind of Ni-Mo-W / K is prepared by impregnation loading method 2 O-Al 2 o 3 Low temperature mercaptan etherification catalyst, it may further comprise the steps:

[0062] To the Al prepared in embodiment 1 2 o 3 Carrier, using the load method to utilize K 2 O to modify it, press K 2 The O content accounts for 1wt% calculation of the total weight of the catalyst, weighs 0.49g of potassium nitrate, adds 19.80g of deionized water to form a solution, and then mixes it with 20g of Al at 30°C 2 o 3 The carrier was impregnated for 8 hours, dried at 110°C for 8 hours, and fired at 500°C at a rate of 2°C / min for 2 hours to prepare K 2 O-Al 2 o 3 Composite modified carrier.

[0063] Catalyst preparation process:

[0064] Active component NiO content accounts for catalyst weight 10wt%, gets 9.27g nickel nitrate, MoO 3 Content accounts for catalyst weight 3wt%, gets 0.88g ammonium molybdate, WO 3 The content accounts for 3wt% of the catalyst weight. Ta...

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Abstract

The invention provides a low-temperature sulfur alcohol etherification catalyst as well as a preparation method and application thereof. According to the catalyst, alkaline aid modified alumina is taken as a carrier, and NiO, MoO3 and WO3 are taken as active components. The low-temperature sulfur alcohol etherification catalyst contains the following components by weight (100% in total): 6wt%-15wt% of NiO, 0.1wt%-10wt% of MoO3, 0.1wt%-10wt% of WO3, 0.1wt%-5wt% of an alkaline aid oxide and the balance of an alumina carrier. The invention further provides the preparation method of the catalyst and application of the catalyst in sulfur etherification reaction for catalyzing sulfur alcohol, olefin or alkadiene in gasoline or liquefied petroleum gas. The catalyst provided by the invention is mild in reaction condition, high in reaction activity, high sulfur-alcohol removal efficiency and low in cost and can be applied to deep desulfurization processes of gasoline and liquefied petroleum gas.

Description

technical field [0001] The invention relates to a low-temperature mercaptan etherification catalyst and its preparation method and application, belonging to the technical field of gasoline desulfurization and purification. Background technique [0002] Gasoline components produced by catalytic cracking, catalytic cracking and delayed coking units will contain a small amount of mercaptan compounds with smaller molecular weights, such as butanethiol, pentanethiol, etc. These mercaptan compounds have low boiling points and mainly exist in in the light fraction of gasoline. Because mercaptan has a foul smell and strong corrosiveness, it will have a great impact on the storage, transportation and use of gasoline. At present, the desulphurization methods used in the industry mainly include the Merox deodorization process. In this process, mercaptans need to be oxidized in an alkaline environment to form disulfides. In the process, lye or other alkaline additives need to be used. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/888C10G49/04
CPCB01J23/002B01J23/888B01J2523/00C10G49/04C10G2300/1037C10G2300/70C10G2400/02B01J2523/847B01J2523/68B01J2523/31B01J2523/69B01J2523/13B01J2523/12B01J2523/23B01J2523/22
Inventor 柯明申志兵王诚博于沛宋昭峥蒋庆哲
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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