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Hydrocracking catalyzer containing heteropoly acid and method of manufacturing the same

A technology of hydrocracking and heteropolyacids, applied in physical/chemical process catalysts, chemical instruments and methods, hydrocarbon oil cracking, etc., can solve the negative effects of apparent reactivity and product distribution, and increase the diffusion resistance of reactants and products major issues

Inactive Publication Date: 2008-01-23
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The hydrocracking catalyst containing molecular sieve has the advantages of strong acidity and large specific surface, but its disadvantage is that the small pore size of the molecular sieve increases the diffusion resistance of reactants and products, which has a negative impact on the apparent reactivity and product distribution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Catalyst preparation: take 150ml concentration as 1mol L -1 30ml of nickel nitrate solution with a concentration of 1mol L -1 The cobalt nitrate solution is prepared as a mixed solution of nickel nitrate and cobalt nitrate, and the specific surface area of ​​60g is greater than 300m 2 .g -1 Carrier SiO 2 Put it in the mixed solution and let it stand for 12h, and dry it at 120°C for 5h after liquid-solid separation. Dry the dried solid in a muffle furnace at 6°C min -1 The speed was increased to 400°C, and the temperature was kept constant for 5h. Immerse the calcined catalyst in an aqueous solution containing 70g of phosphotungstic acid, let it stand for 10 hours, dry it at 100°C for 5 hours, and then calcinate it at 430°C for 4 hours. The chemical composition and heteropolyacid phase of the prepared catalyst are listed in Table 1.

[0022] (2) Evaluation of the catalyst: the prepared catalyst was mixed with 5 / 95 (volume ratio) CS 2 / H 2 Vulcanize at 300°C f...

Embodiment 2

[0024] In Example 1, changing 70g of phosphotungstic acid to 98g of phosphotungstic acid is the cost example. The chemical composition and heteropolyacid phase of the catalyst are listed in Table 1. See Table 3 for the hydrocracking conversion rate and selectivity of cracked products of the evaluation catalyst under the reaction conditions.

Embodiment 3

[0026] In Example 1, change 70g of phosphotungstic acid into 28g of phosphotungstic acid, namely the cost example. The chemical composition and heteropolyacid phase of the catalyst are listed in Table 1. See Table 3 for the hydrocracking conversion rate and selectivity of cracked products of the evaluation catalyst under the reaction conditions.

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PUM

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Abstract

A hydrogenation cracking catalyst containing heteropoly acid and the preparation method are provided, which relates to a hydrogenation cracking catalyst of long chain alkane and the preparation method. The invention provides a hydrogenation cracking catalyst containing heteropoly acid with large aperture and high activity and the preparation method. The invention comprises heteropoly acid, a hydrogenation component and a carrier. The carrier is porous heat resistance inorganic material, the hydrogenation component is double metal compound, making the weight of the catalyst as standard, the content of heteropoly in each component of the catalyst is 1 / 10 to 3 / 5, the remained is the carrier. Firstly, choose the carrier for the catalyst; prepare metal salt water solution of the hydrogenation component; use the metal salt water solution to soak the carrier, dry and roast the solid object after liquid-solid separation; prepare heteropoly acid water solution; use the heteropoly acid water solution to soak the solid object containing nickel and Co, rest, dry and roast.

Description

technical field [0001] The invention relates to a long-chain alkane hydrocracking catalyst and a preparation method thereof, in particular to a heteropolyacid-containing hydrocracking catalyst and a preparation method thereof. Background technique [0002] In the oil refining industry, hydrocracking is an important process for producing high-quality light oil products from heavy oil, and the core of its technology is the catalyst used. The hydrocracking catalyst is a dual-function catalyst, which has both acidic function and hydrogenation function. For example, US Pat. No. 5,536,687 and US Pat. No. 5,447,623; European Pat. No. EP0028938A1 etc. The acid function of the hydrocracking catalyst involved is mainly provided by molecular sieves, and the hydrogenation component is selected from Mo-Ni or W-Ni. Chinese patent CN1389545A involves 20%-40% Y-containing zeolite, 5-20% phosphotungstic heteropolyacid or silicotungstic heteropolyacid, 5-10% nickel oxide, and 40-60% alumina ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/188C10G47/12
Inventor 邱波方维平伊晓东林凌王跃敏万惠霖
Owner XIAMEN UNIV