Method for preparing isohexadecane by using Pd-supported SAPO-31 molecular sieve nanocrystalline bifunctional catalyst

A SAPO-31, dual-function catalyst technology, applied in the field of isoparaffin production, can solve the problems of large grain size of micron molecular sieve, reduced isomerization reaction selectivity, increased catalyst cost, etc. The effect of improving yield, high reactivity and isomerization selectivity
CN110330402AActive Publication Date: 2019-10-15HEILONGJIANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HEILONGJIANG UNIV
Publication Date
2019-10-15

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Abstract

The invention discloses a method for preparing isohexadecane by using a Pd-supported SAPO-31 molecular sieve nanocrystalline bifunctional catalyst, and relates to a method for preparing isoparaffin byadopting the bifunctional catalyst through n-alkane hydroisomerization reaction. The invention aims to solve the problems that the cost of the catalyst is increased due to high loading capacity of noble metals in the catalyst prepared in the prior art, and the selectivity of isomerization reaction is reduced due to large grain size of a micron-sized molecular sieve adopted by the existing catalyst. The method comprises the following steps: with the Pd-supported SAPO-31 molecular sieve nanocrystalline as a bifunctional catalyst, carrying out n-hexadecane hydroisomerization reaction on a fixedbed reactor to prepare isohexadecane. The method has the advantages that the loading capacity of Pd is 0.02 wt%-0.09 wt%; and the proportion of polybranched isomers in the isohexadecane reaches more than 50%. The method is mainly used for preparing isohexadecane.
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Description

technical field

[0001] The invention relates to a method for preparing isoparaffins through hydroisomerization reaction of normal paraffins by using a bifunctional catalyst. Background technique

[0002] With the rapid development of the global economy, the demand for energy is increasing day by day, and the massive consumption and non-renewability of traditional fossil energy pose a higher challenge to the efficient use of existing energy. my country's energy distribution is rich in coal, short of gas, and low in oil. my country's dependence on foreign oil continues to increase, but coal reserves are abundant. Therefore, making full use of my country's abundant coal resources to develop non-petroleum routes to produce fuel oil and other petroleum products is of great significance for solving my country's oil shortage, substitution of petroleum raw materials, and clean oil products.

[0003] The production of Fischer-Tropsch synthetic oil with n-alkanes of different carbon ...

Claims

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