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Catalyst for selective hydrogenation of butadiene and isomerization of 1-butylene, and preparation method and application thereof

A catalyst, butadiene technology, applied in the direction of isomerization hydrocarbon production, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of high catalyst cost and expensive precious metals, etc. The effect of low hydrogenation loss rate and high isomerization rate of 1-butene

Active Publication Date: 2016-06-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The existing technical schemes for the pretreatment of alkylation raw materials all use supported noble metal catalysts. Due to the high price of noble metals, there is a disadvantage of relatively high catalyst costs.

Method used

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  • Catalyst for selective hydrogenation of butadiene and isomerization of 1-butylene, and preparation method and application thereof
  • Catalyst for selective hydrogenation of butadiene and isomerization of 1-butylene, and preparation method and application thereof
  • Catalyst for selective hydrogenation of butadiene and isomerization of 1-butylene, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-4

[0032] Catalyst preparation steps (1)

[0033] Weigh nickel nitrate according to the weight shown in Table 1 and add 500ml of deionized water, then add 0.05mol / L nitric acid to adjust the pH value to 2-3, then add diammonium hydrogen phosphate, cerium nitrate, and magnesium nitrate according to the weight shown in Table 1 , citric acid, and then stirred at room temperature for 1 hour to obtain solutions A1-A4, respectively.

[0034] Table 1 Catalyst preparation table

[0035]

[0036] 110g, 100g, 96g and 92g of aluminum hydroxide powder were added to the solutions A1-A4 to disperse them in the solution to obtain slurries B1-B4 respectively.

[0037] Catalyst Preparation Step (2)

[0038] The resulting slurries B1-B4 were transferred into a hydrothermal synthesis kettle, and subjected to hydrothermal treatment at 120° C. for 5 hours. After the hydrothermal treatment was completed, the obtained slurry was transferred into a rotary evaporator to evaporate the water to d...

Embodiment 5-10

[0054] 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.

[0055] Table 4 raw material composition

[0056]

[0057] 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 80-120°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, the selective hydrogenation reaction is carried out, and the reaction results are listed in Table 5.

[0058] Table 5 process conditions and reaction results

[0059]

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PUM

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Abstract

The invention discloses a catalyst for selective hydrogenation of butadiene and isomerization of 1-butylene. The catalyst is composed of an active component, i.e., amorphous nickel phosphide, an alumina carrier, an auxiliary agent X1 and an auxiliary agent X2. In a final catalyst, the weight of nickel in amorphous nickel phosphide, in terms of metallic nickel, accounts for 5 to 12% of the total weight of the catalyst, a mol ratio of phosphorus to nickel is 2.0-2.4: 1, a mol ratio of the auxiliary agent X1 to nickel is 0.01-0.05: 1 and a mol ratio of the auxiliary agent X2 to nickel is 0.5-1.5: 1, with the balance being the carrier; and the auxiliary agent X1 is at least one selected from rare earth elements, and the auxiliary agent X2 is at least one selected from alkali earth metals. The catalyst is a non-noble metal catalyst, has catalytic activity equivalent to the catalytic activity of a noble metal catalyst when applied to selective hydrogenation of a C4 raw material for removal of butadiene, can substantially reduce catalyst cost, and shows high 1-butylene isomerization activity.

Description

technical field [0001] The invention relates to a butadiene selective hydrogenation, 1-butene isomerization catalyst and its preparation method and application, in particular to a selective hydrogenation of an alkylation raw material to remove butadiene, 1-butene A non-noble metal catalyst for the isomerization of alkenes to 2-butene and its preparation method and application. Background technique [0002] Due to the recent occurrence of smog in various parts of our country, people have paid more attention to the process of gasoline cleanliness. Alkylated gasoline is the most ideal gasoline blending component, which has the advantages of no sulfur, no aromatics, no olefins, low Reid vapor pressure and high octane number. Since 2012, the production capacity of alkylation units in my country has grown rapidly. By the end of 2013, my country's alkylation production capacity has exceeded 5 million tons per year. [0003] Most of the alkylation units put into construction in m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/185C07C7/163C07C11/09C07C9/12C07C11/08C07C5/25
Inventor 周峰马会霞乔凯
Owner CHINA PETROLEUM & CHEM CORP
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