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Non-noble metal selective hydrogenation catalyst, preparation method and application thereof

A technology for hydrogenation catalysts and non-noble metals, applied in chemical instruments and methods, physical/chemical process catalysts, hydrocarbons, etc., can solve the problems of high catalyst cost, limited application, expensive precious metals, etc., and achieve low catalyst cost, The effect of low hydrogenation loss rate and low isomerization rate of butene

Active Publication Date: 2016-06-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The existing technical solutions using supported noble metal catalysts lead to high catalyst costs due to the high price of noble metals
Moreover, the existing supported noble metal catalysts more or less have certain 1-butene isomerization activity, which limits its application in the raw material pretreatment process of 1-butene precision distillation unit

Method used

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  • Non-noble metal selective hydrogenation catalyst, preparation method and application thereof
  • Non-noble metal selective hydrogenation catalyst, preparation method and application thereof
  • Non-noble metal selective hydrogenation catalyst, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-4

[0028] Catalyst preparation steps (1)

[0029] Weigh nickel nitrate hexahydrate and add 500ml deionized water according to the weight shown in Table 1, then add 0.05mol / L nitric acid to adjust the pH value to 2-3, then add diammonium hydrogen phosphate and nitric acid hexahydrate according to the weight shown in Table 1 Cerium, citric acid monohydrate, and then stirred at room temperature for 1 hour to obtain solutions A1-A4, respectively.

[0030] surface Catalyst Preparation Table

[0031]

[0032] Add 77g, 72g, 67g and 78g of aluminum hydroxide powder to solutions A1-A4 to disperse them in the solution to obtain slurries B1-B4 respectively, then transfer the obtained slurries into a rotary evaporator and evaporate the water to dryness at 85°C , and then dried at 120°C for 24 hours to obtain dry glue C1-C4.

[0033] Catalyst Preparation Step (2)

[0034] Place the dry glue C1-C4 in a tubular heating furnace under continuous flow of N 2 In the atmosphere, treat...

Embodiment 5-10

[0048] The reactivity of the catalyst was evaluated by selective hydrogenation of butadiene. Before each catalyst evaluation, the catalyst needs to be pretreated in a hydrogen atmosphere at 200°C for 2 hours, and then cooled to the reaction temperature. A mixed carbon four is used as a raw material, and the composition of the raw material is shown in Table 4. The reaction products were analyzed online by Agilent7890 gas chromatograph.

[0049] Table 4 raw material composition

[0050]

propane Isobutane n-butane trans-2-butene 1-butene Isobutylene cis-2-butene Butadiene Composition / wt% 0.06 34.23 11.55 11.99 11.93 15.74 14.15 0.35

[0051] Using F1-F4 as the catalyst, F0 as the reference, and the above-mentioned mixed carbon four as the raw material, the reaction temperature is 60-100°C, the total pressure is 1.5-2.0MPa, and the space velocity is 5-10h -1 , Under the condition that the hydrogen / butadiene molar ratio is 1.0-2.0, t...

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Abstract

The invention discloses a non-noble metal selective hydrogenation catalyst, which is composed of an active component amorphous nickel phosphide, an alumina carrier and an assistant X. In a final catalyst, in terms of metal nickel, the weight content of nickel in the active component amorphous nickel phosphide accounts for 10-15% of the total catalyst weight, the mole ratio of phosphorus to nickel is 2.0-2.4, the mole ratio of X to nickel is 0.01-0.05:1, and the balance is the carrier, the assistant X is one or more of lanthanum, cerium, praseodymium, samarium, ytterbium and other rare earth elements, preferably cerium. The non-noble metal catalyst has catalytic activity equivalent to that of noble metal catalysts when used in a reaction process for selective hydrogenation of a C4 raw material to remove butadiene, can greatly reduce the catalyst cost, and at the same time has low 1-butene isomerization activity.

Description

technical field [0001] The invention relates to a non-noble metal selective hydrogenation catalyst and its preparation method and application, in particular to a non-noble metal catalyst for selective hydrogenation of C4 raw materials to remove butadiene, its preparation method and application. Background technique [0002] With the continuous expansion of my country's oil refining capacity and ethylene production capacity, the by-product C4 resources available in the market have also increased, which has also promoted the rapid development of the C4 deep processing industry in recent years. The C4 by-product of fluid catalytic cracking (FCC) and ethylene cracking will more or less contain a certain amount of butadiene. If C4 containing butadiene is directly used as raw material to produce high value-added products, it will be It will affect catalyst performance and product quality, such as aromatized gasoline, alkylated gasoline, methyl tert-butyl ether (MTBE) and high-puri...

Claims

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Application Information

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IPC IPC(8): B01J27/185C07C7/163C07C9/10C07C9/12C07C11/09C07C11/08
Inventor 周峰马会霞乔凯
Owner CHINA PETROLEUM & CHEM CORP
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