A kind of butadiene selective hydrogenation, 1-butene isomerization catalyst and its preparation method and application

A catalyst and butadiene technology, which is applied in the direction of isomerization hydrocarbon production, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of expensive precious metals and high catalyst costs, and achieve low catalyst costs and butene processing. Effect of low hydrogen loss rate and high isomerization rate of 1-butene

Active Publication Date: 2018-02-09
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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  • A kind of butadiene selective hydrogenation, 1-butene isomerization catalyst and its preparation method and application
  • A kind of butadiene selective hydrogenation, 1-butene isomerization catalyst and its preparation method and application
  • A kind of butadiene selective hydrogenation, 1-butene isomerization catalyst and its preparation method and application

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

[0034] surface 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 wate...

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 Agilent 7890 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 1.5-2.0 MPa, and the space velocity is 5-10 h -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 butadiene hydrogenation and 1-butene isomerization catalyst. The catalyst is composed of an active component amorphous nickel phosphide, an alumina carrier, an auxiliary agent X1 and an auxiliary agent X2. In the final catalyst, The weight of nickel in the amorphous nickel phosphide is calculated as metallic nickel, accounting for 5-12% of the total catalyst weight, the molar ratio of phosphorus to nickel is 2.0-2.4:1, and the molar ratio of auxiliary agent X1 to nickel is 0.01-0.05: 1. The molar ratio of auxiliary agent X2 to nickel is 0.5-1.5:1, and the rest is a carrier. The auxiliary agent X1 is selected from at least one rare earth element, and the auxiliary agent X2 is selected from at least one alkaline earth metal element. The catalyst is a non-precious metal catalyst, which has catalytic activity comparable to that of a noble metal catalyst in the process of selective hydrogenation of C4 raw materials to remove butadiene, and can greatly reduce the cost of the catalyst. At the same time, the catalyst of the present invention also has extremely high 1‑butene 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 Patents(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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