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Preparation method of catalyst for preparing acrylic acid through selective oxidation of propane

A selectivity and catalyst technology, applied in the direction of catalyst activation/preparation, preparation of organic compounds, physical/chemical process catalysts, etc., can solve the problems of poor selectivity and low catalyst activity

Pending Publication Date: 2022-05-27
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is that the catalyst activity in the prior art is not high, especially the problem of poor selectivity, to provide a catalyst with high activity and selectivity for the selective oxidation of propane to produce acrylic acid and its preparation method

Method used

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  • Preparation method of catalyst for preparing acrylic acid through selective oxidation of propane
  • Preparation method of catalyst for preparing acrylic acid through selective oxidation of propane
  • Preparation method of catalyst for preparing acrylic acid through selective oxidation of propane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The first step: dissolve-co-precipitation method prepares catalyst slurry I of the present invention

[0051] Add 141.5 g of ammonium molybdate, 23.1 g of ammonium metavanadate, 43.4 g of telluric acid and 40 ml of water to the No. 1 beaker, stir the mixture at 75 to 80°C to dissolve it, and add 125.6 g of niobium oxalate and Stir 50ml of distilled water at 75-80℃ to dissolve, then slowly add the solution in the No. 2 beaker dropwise to the No. 1 beaker, continue to add distilled water to 100ml, and react at normal pressure for 2 hours to obtain a compound containing multiple components Metal oxide catalyst slurry I;

[0052] Step 2: Preparation containing NiSb 2 O 6 Structural Slurry II

[0053] 9 g of oxalic acid (H 2 C 2 O 4 ), 146.1g nickel nitrate (Ni(NO 3 ) 2 ), 58.32g antimony oxide (Sb 2 O 3 ) and 900ml of deionized water in a 1000ml beaker to mix evenly, then adjust the pH of the solution to 2, and react at 55 to 60°C under normal pressure for 2.5h to...

Embodiment 2

[0068] The first step: dissolve-co-precipitation method prepares catalyst slurry I of the present invention

[0069] Add 150 g of ammonium molybdate, 23.1 g of ammonium metavanadate, 45.9 g of telluric acid and 45 ml of water to the No. 1 beaker, stir the mixture at 75 to 80°C to dissolve it, and add 138.1 g and 50 ml of niobium oxalate to the No. 2 beaker Stir the distilled water at 80-85°C to dissolve it, then slowly add the solution in the No. 2 beaker dropwise to the No. 1 beaker, continue to add distilled water to 100ml, and react at normal pressure for 2.5h to obtain a multi-component compound Metal oxide catalyst slurry I;

[0070] Step 2: Preparation containing NiSb 2 O 6 Structural Slurry II

[0071] 9 g of oxalic acid (H 2 C 2 O 4 ), 182.7g nickel nitrate (Ni(NO 3 ) 2 ), 58.32g antimony oxide (Sb 2 O 3 ) and 900ml of deionized water in a 1000ml beaker to mix evenly, then adjust the pH of the solution to 1.5, and react at 55 to 60°C under normal pressure for...

Embodiment 3

[0090] The first step: dissolve-co-precipitation method prepares catalyst slurry I of the present invention

[0091] 158.9 g of ammonium molybdate, 25.7 g of ammonium metavanadate, 45.9 g of telluric acid and 50 ml of water were added to the No. 1 beaker, and the mixture was stirred at 85 to 90°C to dissolve it. In the No. 2 beaker, 150.7 g of niobium oxalate and Stir 50ml of distilled water at 80-85°C to dissolve, then slowly add the solution in the No. 2 beaker dropwise to the No. 1 beaker, continue to add distilled water to 100ml, and react at normal pressure for 1.5h to obtain a multi-component solution. Composite metal oxide catalyst slurry I;

[0092] Step 2: Preparation containing NiSb 2 O 6 Structural Slurry II

[0093] 9 g of oxalic acid (H 2 C 2 O 4 ), 219.2g nickel nitrate (Ni(NO 3 ) 2 ), 58.32g antimony oxide (Sb 2 O 3 ) and 900ml of deionized water in a 1000ml beaker to mix evenly, then adjust the pH of the solution to 1, after mixing, react at 60-65°C a...

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PUM

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Abstract

The invention relates to a preparation method of a catalyst for preparing acrylic acid through selective oxidation of propane, in particular to a method for preparing the catalyst for preparing acrylic acid through oxidation of propane by taking Mo, V, Te and Nb as active components, selecting a fixed molar ratio of Mo: V: Te: Nb = (8.20-10.15): (1.5-2.5): (1.50-2.35): (1.80-2.42) and adding an auxiliary agent NiSb2O6 into the Mo-V-Te-Nb active components. The catalyst for preparing acrylic acid through selective oxidation of propane has the characteristics of good selectivity, high yield, good stability and the like.

Description

technical field [0001] The invention relates to a catalyst for catalyzing the oxidation of propane to prepare acrylic acid, and specifically relates to adding auxiliary NiSb into active components 2 O 6 The method obtained a highly active and selective Mo-V-Te-Nb-Sb-Ni-O catalyst. Background technique [0002] Propane is a low-chain saturated alkane, one of the main components of natural gas, liquefied petroleum gas, and coalbed methane. It is relatively abundant on earth and cheap. my country has relatively rich propane resources, such as Daqing, Zhongyuan, Tarim and other oilfields, propane contains about 6%, condensate contains about 3% to 6% propane, and propane accounts for about 60% in liquefied petroleum gas. Up to 15% in natural gas. However, due to the relatively low reactivity of propane and its difficulty in activation, a large amount of cheap propane has not been reasonably developed and utilized. [0003] Acrylic acid is an important petrochemical, light indu...

Claims

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Application Information

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IPC IPC(8): B01J27/057B01J37/08C07C51/215C07C57/05
CPCC07C51/215B01J27/0576B01J23/002B01J37/088B01J37/082B01J2523/00C07C57/04B01J2523/53B01J2523/55B01J2523/56B01J2523/63B01J2523/68B01J2523/847Y02P20/52
Inventor 刘肖飞杨红强翟月勤南洋牛承祥李燕黄鑫魏珍妮全民强何崇慧
Owner PETROCHINA CO LTD
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