Synthetic method of hanging type tetrahydro dicyclopentadiene
A technology for hanging tetrahydrodicyclopentadiene and dicyclopentadiene is applied in the field of synthesizing hanging tetrahydrodicyclopentadiene, which can solve the problem of no industrialization demonstration, short life of isomerized solid acid catalyst, and inability to operate stably and other problems, to achieve the effects of good product separation, low equipment investment and operating costs, and simple processing.
Active Publication Date: 2015-06-17
SYNFUELS CHINA TECH CO LTD
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Problems solved by technology
However, the isomerization solid acid catalyst has a short service life and cannot operate stably, and there is no industrial demonstration
Method used
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[0022] The experimental methods used in the following examples are conventional methods unless otherwise specified.
[0023] The materials and reagents used in the following examples can be obtained from commercial sources unless otherwise specified.
[0024] The DCPD used in the following examples was purchased from Sinopec Shanghai Petrochemical Co., Ltd., and its physical and chemical indicators are shown in Table 1.
[0025] Table 1 Physical and chemical properties of industrial DCPD raw materials
[0026]
[0027] The Pt catalyst (Pt / ZSM-5 catalyst) supported on the ZSM-5 carrier is used as the dual-functional catalyst for hydroisomerization, and the heap volume is respectively loaded at the constant temperature section of the fixed-bed reactor for the one-step hydroisomerization reaction. 7mL of Pt / ZSM-5 catalyst, wherein the mass content of Pt in the catalyst in Implementation 1-28 is shown in Table 2, and the filler outside the constant temperature section in the f...
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Abstract
The invention discloses a synthetic method of hanging type tetrahydro dicyclopentadiene. The synthetic method comprises the following steps of: (1) carrying out reduction activation treatment on hydroisomerization bifunctional catalyst to obtain an activated hydroisomerization bifunctional catalyst; and (2) carrying out a hydroisomerization reaction on dicyclopentadiene under the catalysis of the activated hydroisomerization bifunctional catalyst at a hydrogen atmosphere to obtain the hanging type tetrahydro dicyclopentadiene. Compared with the existing synthetic method, the synthetic method has the following advantages that industrial-grade dicyclopentadiene can be selected as a raw material, the reaction can be directly carried out in a hydrogenation link without using complex purification and desulfurization and denitrification processes, thus the whole process flow is simplified; the process flow is simple and free of environmental pollution, and the equipment investment and the running cost are low; and the subsequent treatment is simple, the product separation effect is good, and the purity of the obtained hanging type tetrahydro dicyclopentadiene reaches more than 98%.
Description
technical field [0001] The invention relates to a method for synthesizing pendant tetrahydrodicyclopentadiene. Background technique [0002] Hanging tetrahydrodicyclopentadiene (exo-THDCPD, also known as JP-10) has the characteristics of low freezing point (-79°C), suitable flash point (55°C), high volume calorific value and low toxicity. A high-density liquid hydrocarbon fuel with excellent performance. [0003] The synthesis of hanging tetrahydrodicyclopentadiene usually goes through two steps of hydrogenation and isomerization. First, dicyclopentadiene is hydrogenated and reduced to bridged tetrahydrodicyclopentadiene (endo-THDCPD), and then bridged tetrahydrodicyclopentadiene is isomerized into hanging tetrahydrobicyclopentadiene under the action of an acid catalyst. pentadiene. Nickel catalysts and noble metal hydrogenation catalysts are mostly used in the hydrogenation process, which can hydrogenate dicyclopentadiene under a wide range of reaction conditions. Anhyd...
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IPC IPC(8): C07C13/61C07C5/13
Inventor 高鹏陶智超刘鑫周洪义杨勇
Owner SYNFUELS CHINA TECH CO LTD