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Sulfur transform resistant macroreticular catalyst and its preparing process

A sulfur-resistant conversion and catalyst technology, which is applied in the direction of catalyst carriers, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of shortened catalyst life, achieve improved macroscopic activity, good mechanical strength, high strength and macroscopic activity Effect

Inactive Publication Date: 2003-08-27
CHINA PETROCHEMICAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Of course, the difficulty in preparing a macroporous catalyst is to ensure that it has good mechanical strength, otherwise the life of the catalyst will be shortened

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Take 100 grams of pseudo-boehmite, add γ-Al 2 o 3 40 grams, MgCO 3 10 grams, 5 grams of metatitanic acid, and 3 grams of Tianqing powder were mixed evenly, kneaded with 10% nitric acid solution, extruded and roasted at 500 ° C for 3 hours to obtain a carrier. The carrier number is Z-1, and each group in the carrier Part content is shown in Table 1, and data such as strength, water absorption, specific surface area, pore distribution and pore volume of the carrier are shown in Table 2; 0 o 3 5%, C 0 O1%, K 2 O10% molybdenum, cobalt, potassium nitrate mixed solution impregnated the carrier, dried at 120°C for 2 hours and calcined and decomposed at 450°C for 2 hours to obtain catalyst CT-1. The pore distribution, pore volume and specific surface of the catalyst were measured by mercury intrusion porosimetry, and the results are shown in Table 3.

Embodiment 2

[0026] The preparation method is the same as in Example 1, except that 40 grams of θ-Al 2 o 3 Instead of 40g gamma-Al 2 o 3 , the MgCO 3 Change it to 30 grams, change the metatitanic acid to 8 grams, and replace Tianqing powder with 3 grams of methyl methacrylate, so that the carrier is Z-2, and the catalyst is CT-2. The content of each component in the carrier is shown in Table 1, the performance data of the carrier is shown in Table 2, and the pore structure data of the catalyst is shown in Table 3.

Embodiment 3

[0028] Take 30 grams of pseudo-boehmite, add 70 grams of γ-Al 2 o 3 , 5 grams of MgO, 5 grams of metatitanic acid, 10 grams of a-Al 2 o 3 , 3 grams of kapok, mixed evenly, kneaded with 10% nitric acid solution, extruded and roasted at 500 ° C for 3 hours to obtain carrier Z-3; 0 o 3 5%, C 0 O1%, K 2O10% mixed solution of cobalt, molybdenum and potassium nitrate impregnated the carrier, dried at 120°C for 2 hours, and roasted and decomposed at 450°C for 2 hours to obtain catalyst CT-3. The content of each component in the carrier is shown in Table 1, the performance data of the carrier is shown in Table 2, and the pore structure data of the catalyst is shown in Table 3.

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PUM

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Abstract

A sulfur transform resistant Co-Mo serial macrorecticular catalyst is composed of active components containing the compund of at least one of Co and Ni and the compound of at least one of Mo and W, and carrier whose main component is alumina. Its average aperture is 80 nm. Its minimal pore volume is 0.30 sq.cm / g, and its minimal specific surface area is 100 sq.m / g. Its advantages are high porosity, macrorecticular structure and better mechanical strength.

Description

technical field [0001] The invention relates to a Co-Mo catalyst and a preparation method thereof, in particular to a macroporous Co-Mo series sulfur-resistant replacement catalyst and a preparation method thereof. Background technique [0002] At present, in small and medium chemical fertilizer plants that use coal or residual oil as raw materials to produce ammonia, γ-Al 2 o 3 It is a sulfur-tolerant shift catalyst with cobalt molybdenum as the active component and alkali metal as the auxiliary agent. As the pressure of the conversion system increases, higher requirements are placed on the performance of the catalyst. The shift catalyst should not only have good low-temperature activity, but also have good mechanical strength. However, while improving the strength of the catalyst, its porosity will obviously decrease, which will bring troubles to the production process of the catalyst, and often requires multiple impregnations to make the active...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/882B01J32/00B01J35/10
Inventor 纵秋云田兆明刘伟华余汉涛孙海燕张新堂李欣郭建学
Owner CHINA PETROCHEMICAL CORP