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Noble metal modified Cu/ZrO2 radical synthesizing methanol catalyst and its making method and application

A technology for synthesizing methanol and catalysts, which is applied in the production of hydrocarbons from carbon oxides and the production of bulk chemicals. It can solve the problems of catalytic system modification that have not been reported, and achieve good mechanical strength, good performance repeatability, and simple preparation methods. Effect

Inactive Publication Date: 2007-01-31
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that a small amount of Pd as a catalyst additive can achieve good results, but for Cu / ZrO 2 The modification of the catalytic system has not been reported

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Copper nitrate (Cu(NO 3 ) 2 ·3H 2 O) 22.53g and zirconium oxychloride (ZrOCl 2 ·8H 2 (2) 65.67g is dissolved in the deionized water of 800mL, after being made into solution, under 70 ℃ of control temperature and pH=9 conditions, with sodium carbonate solution (take by weighing 63.6g anhydrous Na 2 CO 3 Dissolve in 800mL deionized water) and feed at the same time and fully stir with a mechanical stirrer to mix the precipitate evenly. After precipitation, continue to stir and age at 70°C for 2 hours, filter and wash with deionized water until no chloride ions can be detected with silver nitrate solution Then, the filter cake was dried overnight at 120°C, and finally baked at 350°C for 3 hours to obtain copper-zirconium oxide powder. After tablet molding, crush to 40-60 mesh. Pipette 16.5mL of silver nitrate solution with a concentration of 0.0015g / mL and impregnate 3.20g (2.2mL) of the above-mentioned copper-zirconium oxide for 24 hours, and dry it with an infrared ...

Embodiment 2

[0018] Copper nitrate (Cu(NO 3 ) 2 ·3H 2 O) 22.53g and zirconium oxychloride (ZrOCl 2 ·8H 2 (2) 65.67g is dissolved in the deionized water of 800mL, after being made into solution, under control temperature 90 ℃ and pH=10 conditions, with sodium carbonate solution (take by weighing 63.6g anhydrous Na 2 CO 3 Dissolve in 800mL deionized water) and feed at the same time and fully stir with a mechanical stirrer to mix the precipitate evenly. After precipitation, continue to stir and age at 70°C for 2 hours, filter and wash with deionized water until no chloride ions can be detected with silver nitrate solution Then, the filter cake was dried overnight at 120°C, and finally baked at 500°C for 3 hours to obtain copper-zirconium oxide powder. After tablet molding, crush to 40-60 mesh. Pipette 2.2mL of silver nitrate solution with a concentration of 0.0015g / mL and impregnate 3.20g (2.2mL) of the copper-zirconium oxide prepared above for 12 hours, and dry it with an infrared lamp...

Embodiment 3

[0020] Copper nitrate (Cu(NO 3 ) 2 ·3H 2 O) 22.53g and zirconium oxychloride (ZrOCl 2 ·8H 2 (2) 65.67g is dissolved in the deionized water of 800mL, after being made into solution, under control temperature 70 ℃ and pH=11 conditions, with sodium carbonate solution (take by weighing 63.6g anhydrous Na 2 CO 3 Dissolve in 800mL deionized water) and feed at the same time and fully stir with a mechanical stirrer to mix the precipitate evenly. After precipitation, continue to stir and age at 70°C for 2 hours, filter and wash with deionized water until no chloride ions can be detected with silver nitrate solution Then, the filter cake was dried overnight at 120°C, and finally baked at 350°C for 3 hours to obtain copper-zirconium oxide powder. After tablet molding, crush to 40-60 mesh. Pipette 16.5mL of palladium nitrate solution with a concentration of 0.0015g / mL and impregnate 3.20g (2.2mL) of the above-mentioned copper-zirconium oxide for 24 hours, and dry it with an infrared...

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Abstract

A noble metal modified Cu / ZrO2-based catalyst for synthesizing methanol contains proportionally Cu, Zr and Pd or Ag. It is prepared through mixing the mixed solution of copper nitrate and zirconium oxychloride with the solution of sodium carbonate, stirring, codepositing, keeping pH=9-11, washing with distilled water, drying, calcining, cooling, tabletting, pulverizing, immersing in the solution of palladium (or silver) nitrate, and infrared baking.

Description

technical field [0001] The invention belongs to a catalyst for synthesizing methanol, in particular to a catalyst for synthesizing methanol with a copper-zirconium oxide modified by noble metal auxiliary agent palladium or silver. Background technique [0002] Methanol is an important basic organic chemical raw material. In addition, it is also expected to become a new type of liquid fuel and petroleum substitute. Therefore, the research and development of methanol synthesis catalysts has attracted people's attention. At present, the catalysts for the synthesis of methanol in industry are mainly Cu / ZnO / Al 2 o 3 catalytic system, but this catalyst still has some weaknesses, such as poor heat resistance, and requires 3-12% CO in the process of reduction and reaction 2 In order to maintain its catalytic activity, and the operating cost is relatively large. In order to overcome these weaknesses, people have successively studied and developed new copper-based catalyst systems ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/89C07C1/10C07C31/04
CPCY02P20/52
Inventor 孙予罕何鸣元林明桂李文怀杨成单永奎魏伟王太英
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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