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Method for evaluating performance of catalyst

A technology of catalytic performance and catalyst, which is applied in the direction of chemical analysis using catalysis, can solve the problem of inability to form a direct connection between results and results, and achieve the effect of accuracy, speed and selectivity.

Active Publication Date: 2017-02-22
王宏铭
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, different parameter settings in the TPR and TPO tests lead to relatively isolated analysis of the results, and cannot form a direct relationship between the results; and the results of traditional characterization are also a posteriori, that is, the results of TPR and TPO. The results are used to explain the results of the completed catalyst reaction evaluation, not to directly judge and screen the performance of unknown catalysts

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A with known catalytic performance is HTB-1H hydrogenation catalyst (Liaoning Haitai Science and Technology Development Co., Ltd.), it is known that A passes through 280 ° C, H 2 After 4 hours of activation, in H 2 / CO=3, pressure 2MPa, temperature 280°C, CH in the product 4 The selectivity of A is 69%, that is, A is a catalyst that tends to selectively generate hydrocarbons under the above reaction conditions.

[0013] The preparation method of B with unknown catalytic performance is: weigh 100 grams of alumina carrier after roasting at 600 ° C for 4 hours, and mix 126 grams of nickel nitrate [Ni(NO 3 ) 2 ·6H 2 O], 1.7 grams of ammonium metatungstate [(NH 4 ) 6 h 2 W 12 o 40 ·xH 2 O] and 2.7 g of yttrium nitrate [YNO 3 ·6H 2 O] with deionized water co-dissolution and impregnated on the alumina carrier; baked at 110°C for 5 hours, decomposed for 2 hours at 300°C and 450°C respectively, to obtain a composition (% by weight) containing 20% ​​nickel, 1.0% tungst...

Embodiment 2

[0017] The commercially available MS-2 methanol synthesis catalyst (Liaoning Haitai Science and Technology Development Co., Ltd.) is used as sample A of known catalytic performance, and the commercially available TMF-95 furfural hydrogenation dimethyl furan catalyst (Liaoning Haitai Science and Technology Development Co., Ltd. ) as sample B with unknown catalytic performance.

[0018] It is known that A passes through 280°C, H 2 After 4 hours of activation, in H 2 / CO=2, when the pressure is 3MPa, and the temperature is 260°C, the CH in the product 3 The selectivity of OH is 89%, that is, A is a catalyst that tends to selectively generate oxygenates (alcohols) under the above reaction conditions.

[0019] Carry out in-situ continuous TPR-TPO test respectively to A and B, the instrument used is Chembet Pulsar full-automatic temperature-programmed chemisorption analyzer (U.S. Quanta Instrument Company), and test procedure and parameter are identical, specifically, take 1g of ...

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PUM

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Abstract

The invention provides a method for evaluating performance of a catalyst used in an atmosphere containing synthetic gas. Through an analytical test of in-situ continuous TPR-TPO (temperature programmed reduction-temperature programmed oxidation), after reduction consumption H peak and oxidation consumption O peak data are acquired, the selectivity of an unknown catalyst sample is judged accurately and quickly according to a provided judgment rule and in combination with the performance of a known catalyst sample.

Description

technical field [0001] The invention relates to a method for evaluating the performance of a catalyst, in particular to a method for evaluating the performance of a catalyst containing synthesis gas (H 2 The method of performance when used in a mixed gas with CO) atmosphere. Background technique [0002] Various catalysts, especially various metals and metal-modified catalysts are widely used in coal chemical industry, natural gas chemical industry and C1 chemical chemical industry, such as nickel catalyst used in methanation process, iron catalyst used in Fischer-Tropsch synthesis and Cobalt catalyst, modified copper catalyst used in one-step synthesis gas production of dimethyl ether, etc. Different process conditions and different catalysts are used, and syngas is used as raw material, but different products can be obtained. Some reaction products are mostly hydrocarbons, and some reactions tend to generate oxygenates. In order to screen out suitable catalysts under ce...

Claims

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Application Information

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IPC IPC(8): G01N31/10
CPCG01N31/10
Inventor 王翀
Owner 王宏铭