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Sulfur-resisting CO transforming catalyst and its preparation process

A technology for transforming catalysts and carbon monoxide, applied in catalyst activation/preparation, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., which can solve anti-sulfurization, poor thermal stability, short service life of catalysts, etc. question

Inactive Publication Date: 2009-02-18
福建厦达紫光催化剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of supported potassium-containing catalyst has problems such as potassium loss, anti-sulfurization, poor thermal stability and carrier phase transition during use, and the service life of the catalyst is short

Method used

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  • Sulfur-resisting CO transforming catalyst and its preparation process

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Example 1: 25.5 g of potassium carbonate, 1.0 g of urea, 7.8 g of cobalt nitrate, 4.9 g of ammonium molybdate and 11.0 g of ammonium tungstate were dissolved in distilled water, and then the pH value of the final solution was adjusted to 9.0 with concentrated ammonia water, and the volume was 160 mL; γ-Al with the following properties 2 o 3 Spherical carrier: spherical diameter 3.0-6.0mm, average diameter 4.0mm; water absorption 0.60mL / g, specific surface area 170m 2 γ-Al with a bulk density of 0.70g / mL and an average crushing strength of 55N per grain 2 o 3 100g was put into the prepared Mo-W-Co-K impregnating solution for 10h and then dried at 120°C for 5h. The activity of the obtained catalyst was evaluated. The results are shown in Table 1.

Embodiment 2～6

[0011] Embodiment 2~6: Similar to embodiment 1, its difference is that the ammonium molybdate amount in embodiment 1 is changed into 7.3g, 9.7g, 12.1g, 14.6g and 17.1g respectively, and the ammonium tungstate amount is changed into respectively 8.8g, 6.6g, 4.4g, 2.2g and 0g, namely Examples 2-6, the composition and activity evaluation results of the catalyst are shown in Table 1.

Embodiment 7～9

[0012] Embodiment 7~9: similar to embodiment 1, its difference is that the urea in embodiment 1 is changed into ethylenediaminetetraacetic acid 1.0g, citric acid 1.0g and tartaric acid 1.0g respectively, namely embodiment 7~9, The composition and activity evaluation results of the catalysts are shown in Table 1.

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Abstract

The present invention relates to catalyst, and is especially one kind of sulfur resisting CO transforming catalyst and its preparation process. The catalyst is sulfur resisting Co-Mo-W-K / gamma-Al2O3 catalyst with high activity at low temperature and high heat resistance. The catalyst consists of CoO 0.5-5 wt%, MoO3 2-7 wt%, WO3 1-5 wt%, K2O-15 wt%, complexing stabilizer 1 wt%, and carrier gamma-Al2O3 for the rest. The preparation process includes dissolving potassium salt, cobalt salt, ammonium molybdate, ammonium tungstate and complexing stabilizer in distilled water; regulating the pH to 7-9 with water and ammonia water; soaking carrier gamma-Al2O3 with the compounded solution and drying.

Description

technical field [0001] The invention relates to a carbon monoxide shift reaction catalyst, in particular to a sulfur-resistant carbon monoxide shift catalyst and a preparation method thereof. Background technique [0002] The carbon monoxide shift reaction refers to the reaction between carbon monoxide (CO) and water vapor (H 2 O) reacts to form carbon dioxide (CO 2 ) and hydrogen (H 2 )Reaction. It is an essential step in the production of hydrogen from coal or hydrocarbon-bearing minerals. Carbon monoxide conversion can only have a considerable reaction rate under the catalysis of a catalyst, so the catalytic performance of the catalyst has a significant impact on the economic benefits of the production process. Carbon monoxide shift catalysts can be divided into three categories: one is Cu-Zn, which has high activity at low temperature (220-250°C), but is easy to lose activity at high temperature and is easily poisoned by sulfur (S) in the raw gas. The service life i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/887B01J23/85B01J32/00B01J37/02C01B3/16
CPCY02P20/52
Inventor 杨意泉王会芳连奕新王丽丽方维平李一农戴深峻
Owner 福建厦达紫光催化剂有限公司