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Catalyst for dehydrogenating light alkane and application of catalyst

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

Active Publication Date: 2015-04-29
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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  • Catalyst for dehydrogenating light alkane and application of catalyst
  • Catalyst for dehydrogenating light alkane and application of catalyst
  • Catalyst for dehydrogenating light alkane and application of catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Weigh 52.65 grams of chromium nitrate, 2.15 grams of potassium nitrate, 4.56 grams of copper nitrate, 0.0027 grams of gallium nitrate, 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% 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 gas chromatogra...

Embodiment 2

[0034] Weigh 52.65 grams of chromium nitrate, 2.15 grams of potassium nitrate, 4.56 grams of copper nitrate, 2.7 grams of gallium nitrate, add to 100 ml of deionized water, then add 86.5 grams of alumina carrier, adjust the pH value of the solution to 3.5 with 2.5% 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.

[0035]

Embodiment 3

[0037] Weigh 52.65 grams of chromium nitrate, 2.15 grams of potassium nitrate, 4.56 grams of copper nitrate, 0.027 grams of gallium nitrate, add to 100 ml of deionized water, then add 87.499 grams of alumina carrier, adjust the pH value of the solution to 3.5 with 2.5% 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.

[0038]

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Abstract

The invention relates to a catalyst for dehydrogenating light alkane and application of the catalyst in order to mainly solve the problem of relatively-low activity of a dehydrogenating catalyst prepared in the prior art. The problem is better solved through the technical scheme that the catalyst for dehydrogenating light alkane comprises the following components in parts by weight: 1-30 parts of a Cr element or an oxide of the Cr element (a), 0.1-5 parts of Li, Na, K and Rb elements or oxides of the Li, Na, K and Rb elements (b), 0.1-10 parts of Cu, Co, Ni and Fe elements or oxides of the Cu, Co, Ni and Fe elements (c), 0.001-1 part of a Ga element or an oxide of the Ga element (d), and 54-99 parts of Al2O3 (e). The catalyst can be used for industrial production of light olefin prepared by dehydrogenating light alkane.

Description

technical field [0001] The invention relates to a low-carbon alkane dehydrogenation catalyst and its application. Background technique [0002] Low-carbon olefins, such as propylene and isobutylene, are very important organic chemical raw materials. Together with ethylene, they are considered to be the basis of modern petrochemical industry, and are used to produce polymers, gasoline, detergents and other chemical raw materials. The traditional method of preparing propylene and isobutylene is to use ethylene co-production and light oil (naphtha, light oil) cracking process, but oil reserves are limited, and propylene and isobutene are limited by the target products, so it is difficult to increase in a large scale, so countries around the world are committed to development A new route for the preparation of propylene and isobutene. Among them, using propane and isobutane in petrochemical by-products or natural gas as raw materials, the method of preparing corresponding propy...

Claims

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Application Information

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