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Application of hierarchical pore molecular sieve in preparation process of cyclopentadiene and JP-10 aviation fuel

A cyclopentadiene and molecular sieve technology, applied in molecular sieve catalysts, including molecular sieve catalysts, preparation of heterocyclic compounds, etc., can solve the problems of serious environmental pollution, many by-products, complex separation processes, etc., and achieve low catalyst cost and reduced process. cost effect

Pending Publication Date: 2021-06-29
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are many by-products in each step of the method, which requires a complicated separation process, and the acid-catalyzed isomerization step has serious environmental pollution and low yield

Method used

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  • Application of hierarchical pore molecular sieve in preparation process of cyclopentadiene and JP-10 aviation fuel
  • Application of hierarchical pore molecular sieve in preparation process of cyclopentadiene and JP-10 aviation fuel
  • Application of hierarchical pore molecular sieve in preparation process of cyclopentadiene and JP-10 aviation fuel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 113、114

[0157] Examples 113 and 114 of the present invention use Amberlyst-36 as a catalyst and react at the same temperature (140° C.) for 8 hours, and the yield of cyclopentadiene is 90%. But the resin was recycled a second time and the yield of cyclopentadiene dropped to 13%. This shows that this catalyst cannot be recycled in the dehydration reaction of cyclopentanediol.

Embodiment 168-170

[0162] In Examples 168-170 of the present invention, the hierarchical porous SAPO-34 molecular sieve catalyst was used, and the initial yield of cyclopentadiene was 63%, which was basically equivalent to the reactivity of other hierarchical porous molecular sieves. But the cyclopentadiene yield of its reaction for 40 hours has dropped to 33%; After reacting for 100 hours, the cyclopentadiene yield is only 13%. It can be seen that the hierarchically porous SAPO-34 molecular sieve cannot effectively improve the dehydration stability of cyclopentanediol. Hierarchical pore SAPO-34 molecular sieve is not the catalyst protected in this patent.

Embodiment 253

[0166] The acid treatment preparation of embodiment 253 hierarchical porous molecular sieves

[0167] Add 2g of ZSM-5 or 2g of Y-type molecular sieve into 100mL of 0.05mol / L oxalic acid solution, stir at 90°C for 2 hours, wash three times, filter, dry at 120°C for 6 hours, and roast at 550°C for 2 hours to prepare the acid Treated hierarchical porous ZSM-5 molecular sieve. The nitrogen physical adsorption of hierarchical porous ZSM-5 is shown in Fig. 7(a), which shows a hysteresis loop characteristic curve of mesoporous materials. The pore size distribution of the hierarchically porous ZSM-5 thus calculated is shown in Figure 7(b), and its pore size is in the range of 5-30 nm. The prepared catalyst is recorded as Hierarchical HZSM-5-253 and Hierarchical HY-253.

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Abstract

The invention relates to an application of a hierarchical pore molecular sieve in a the preparation process of cyclopentadiene and JP-10 aviation fuel. The hierarchical pore molecular sieve is one or two or more of an H-ZSM-5 molecular sieve, an H-beta molecular sieve, an H-Y molecular sieve, an H-USY molecular sieve, a La-Y molecular sieve and an H-MOR molecular sieve with a hierarchical pore structure, a sulfonated SBA-15 molecular sieve, a sulfonated MCM-41 molecular sieve, a sulfonated Ti-SBA-15 molecular sieve, a sulfonated MCM-41 molecular sieve, a sulfonated Zr-MCM-41 molecular sieve and a sulfonated Zr-SBA-15 molecular sieve; and the hierarchical pore structure comprises micropores and mesopores. The catalyst and the raw materials used in the method are cheap and easy to obtain, the preparation process is simple, and the hierarchical pore molecular sieve has high activity and selectivity for rearrangement reaction of furfuryl alcohol, hydrogenation reaction of hydroxyl cyclopentenone and dehydration reaction. The invention provides a cheap and efficient synthesis method for synthesizing the JP-10 aviation fuel from a lignocellulose-based platform compound furfuryl alcohol.

Description

technical field [0001] The invention relates to the field of catalytic transformation of biomass, in particular to the application of multi-stage pore molecular sieves in the process of preparing JP-10 aviation fuel. Background technique [0002] Environmental problems such as the dwindling of fossil resources and the large amount of greenhouse gas emissions caused by the combustion of fossil energy are becoming more and more prominent, and the social demand for energy continues to increase. Therefore, the development of new energy that can replace fossil resources is imperative. As a renewable organic carbon source, biomass has become a hot research topic in the production of carbon materials, fuels and chemicals. [0003] Aviation fuel JP-10 is a high-density aviation fuel commonly used in the world. The fuel has a density of 0.935 g / cm according to the U.S. military specification MIL-P-87107C-1989 3 (16°C), the freezing point is -79°C, and the combustion heat value is 4...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C45/59C07C49/707C07C29/145C07C35/06C07C1/24C07C13/15C07C2/50C07C2/52C07C5/03C07C5/22C07C13/61B01J31/10B01J29/40B01J29/08B01J29/03B01J29/04B01J29/70B01J29/18B01J35/10
CPCC07C45/59C07C29/145C07C1/24C07C2/50C07C2/52C07C5/03C07C5/222B01J31/10B01J29/40B01J29/084B01J29/088B01J29/0308B01J29/041B01J29/7007B01J29/18C07C2601/08C07C2601/10C07C2603/68C07B2200/09B01J2229/18C07C2531/10C07C2529/40C07C2529/08C07C2529/03C07C2529/04C07C2529/70C07C2529/18B01J35/643B01J35/695B01J35/647C07C49/707C07C35/06C07C13/15C07C13/61
Inventor 李广亿李宁张涛王爱琴王晓东丛昱
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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