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Low-carbon alkane dehydrogenation catalyst and use method thereof

A technology for dehydrogenation catalysts and low-carbon alkanes, which is applied in the direction of hydrocarbons, hydrocarbons, chemical instruments and methods, etc., and can solve the problem of low activity of low-carbon alkane dehydrogenation catalysts

Inactive Publication Date: 2015-03-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One of the technical problems to be solved by the present invention is the low activity of low-carbon alkane dehydrogenation catalysts in the prior art, providing a new low-carbon alkane dehydrogenation catalyst

Method used

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  • Low-carbon alkane dehydrogenation catalyst and use method thereof
  • Low-carbon alkane dehydrogenation catalyst and use method thereof
  • Low-carbon alkane dehydrogenation catalyst and use method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Weigh 52.65 grams of chromium nitrate, 2.15 grams of potassium nitrate, 4.56 grams of copper nitrate, 0.0014 grams of phosphoric acid, add to 100 ml of deionized water, then add 87.4999 grams of alumina carrier, adjust the pH value of the solution to 3.5 with 2.5% by weight of ammonia water , and then immersed in a water bath at 80°C for 1 hour, the sample was taken out and filtered, dried in an oven at 120°C for 8 hours, and then put into a muffle furnace and calcined at 550°C for 4 hours to obtain the desired catalyst. Adjust the flow rate of propane gas through the mass flow meter, enter the preheating zone for mixing, and then enter the reaction zone. Both the preheating zone and the reaction zone of the reactor are heated by electric heating wires to make them reach the predetermined temperature. The inner diameter of the reactor is Ф9mm— Ф6mm stainless steel casing, about 400mm long. After the reaction gas passes through the condensation tank, it enters the ga...

Embodiment 2

[0035]Weigh 52.65 grams of chromium nitrate, 2.15 grams of potassium nitrate, 4.56 grams of copper nitrate, 1.4 grams of phosphoric acid, add to 100 ml of deionized water, then add 85.5 grams of alumina carrier, adjust the pH value of the solution to 3.5 with 2.5% by weight of ammonia water , and then immersed in a water bath at 80°C for 1 hour, the sample was taken out and filtered, dried in an oven at 120°C for 8 hours, and then put into a muffle furnace and calcined at 550°C for 4 hours to obtain the desired catalyst. Evaluation conditions are the same as in Example 1, and the results are shown in Table 1.

[0036]

Embodiment 3

[0038] Weigh 52.65 grams of chromium nitrate, 2.15 grams of potassium nitrate, 4.56 grams of copper nitrate, 0.014 grams of phosphoric acid, add to 100 milliliters of deionized water, then add 87.499 grams of alumina carrier, adjust the pH value of the solution to 3.5, and then immersed in a water bath at 80°C for 1 hour, take out the sample and filter it, dry it in an oven at 120°C for 8 hours, then put the sample into a muffle furnace and bake it at 550°C for 4 hours to obtain the required catalyst . Evaluation conditions are the same as in Example 1, and the results are shown in Table 1.

[0039]

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PUM

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Abstract

The invention relates to a low-carbon alkane dehydrogenation catalyst and a use method thereof, and the low-carbon alkane dehydrogenation catalyst is mainly used for solving the problem of low activity of a dehydrogenation catalyst prepared in the prior art. In order to better solve the problem, the technical scheme adopted by the invention is as follows: the low-carbon alkane dehydrogenation catalyst provided by the invention comprises the following components in parts by weight: a) 1-30 parts of Cr element or an oxide thereof; b) 0.1-5 parts of K element or an oxide thereof; c) 0.1-10 parts of Cu element or an oxide thereof; d) 0.001-1 part of P element or an oxide thereof; e) 0-5 parts of Ca element or an oxide thereof; f) 0-5 parts of Fe element or an oxide thereof; g) 44-99 parts of Al2O3. The low-carbon alkane dehydrogenation catalyst can be used in the industrial production of low-carbon alkane dehydrogenation for preparing low-carbon olefin.

Description

technical field [0001] The invention relates to a low-carbon alkane dehydrogenation catalyst and a preparation method thereof. Background technique [0002] Low-carbon olefins usually refer to olefins with less than or equal to 4 carbon atoms, which are very important organic chemical raw materials, especially ethylene, propylene, butylene, etc. Propylene, acrylonitrile, ethylene oxide, propylene oxide, butanol, cumene, etc. Among them, the amount of propylene is second only to ethylene, etc. In recent years, the global propylene consumption has grown at an average annual rate of 4.8%, exceeding the growth rate of propylene production in the same period. my country's demand for propylene is quite large, and it has long relied on imports. It is predicted that during the 12th Five-Year Plan period, my country will need to import 5 million tons of propylene every year. With the development of the rubber industry, especially with the requirements of environmental protection, t...

Claims

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Application Information

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IPC IPC(8): B01J23/86C07C5/333C07C11/06C07C11/09
CPCY02P20/52
Inventor 吴省缪长喜刘瑞丹姜冬宇
Owner CHINA PETROLEUM & CHEM CORP
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