Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for preparing deuterated ethylene

A technology of deuterated ethylene and tetrachloroethylene, applied in the field of deuterated ethylene preparation, can solve the problems of complex process, low purity and high ethane impurity content, and achieve the effects of simple process operation, good application prospect and high product purity

Active Publication Date: 2021-07-06
718TH RES INST OF CHINA SHIPBUILDING INDAL CORP
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Because the preparation method of ordinary ethylene is more suitable for the needs of large-scale industrial production of ethylene, but for the production of kilogram-level fine chemical products such as deuterated ethylene, there are problems such as complex process, low purity, and easy introduction of hydrogen impurities to reduce the deuteration rate.
At present, the prior art discloses the process of preparing deuterated acetylene by reacting calcium carbide and heavy water, and adding deuterium to prepare deuterated ethylene. The reaction route is long, the storage risk of deuterated acetylene is high, and the by-product ethane and other impurities have high content. Problems such as low utilization rate of raw materials are not suitable for mass production
Due to the lack of mature manufacturing technology, the country is unable to provide deuterated ethylene products, and the import of deuterated ethylene is also controlled, the import volume is small, and the price is extremely expensive

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Add 800 grams of catalyst (520 grams of zinc powder, 10 grams of copper powder, 10 grams of copper powder, 10 grams of copper powder, 100 grams of iodide, sodium iodide, 50 grams of copper chloride, copper chloride 20 grams), solvent tetrahydrofuran and 100 grams of weight water, under nitrogen protection, stirred to 40 ° C under nitrogen gas protection, and then slowly dropped with tetrachlorethylene 600 g of tetrachlorethylene to form a crude gas in the stirring reaction kettle. Then, the crude gas was sieved by molecular sieves, dried, gave a deuterated ethylene having a volume purity of 99.3%, and the conversion was 85%.

Embodiment 2

[0020] Add 600 grams of catalyst (400 grams of zinc powder, 50 grams of copper powder, 50 grams of copper powder, 50 grams of iodide, 20 grams of iodide, 20 grams of iodide, copper chloride, copper chloride 40 grams), solvent dioxane 1000 g and 800 grams of weight water, under nitrogen protection, stirring the mixing system in the stirring reaction kettle to 60 ° C, and then slowly drop 600 g of tetrachlorethylene in the stirred reaction kettle The crude gas was generated, and then the crude gas was used to sieve the crude gas, dried, gave a volume purity of 99.1% of deuterated ethylene, and the conversion was 82%.

Embodiment 3

[0022] Add 500 grams of catalyst (300 grams of zinc powder, 50 grams of copper powder, 0 grams of copper powder, 0 grams of copper powder, p-iodide, 50 grams of sodium iodide, copper chloride, copper chloride 50 grams), the solvent dioxane is 800 grams and 100 grams of heavy water. Under nitrogen protection, the mixing system in the stirring reaction kettle is stirred to 80 ° C, and then slowly dropped 800 grams of tetrachlorethylene in the stirred reaction kettle. The crude gas was generated, and then the crude gas was used to sieve the crude gas, dried, gave a degree of deuterated ethylene having a volume purity of 99.1%, and the conversion was 76%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method for preparing deuterated ethylene, and belongs to the technical field of preparation of deuterated ethylene. Under the protection atmosphere of inert gas or nitrogen, tetrachloroethylene and heavy water serve as raw materials, in the presence of a catalyst and an ether solvent, a deuterated ethylene gas crude product is generated through one-step reaction, and deuterated ethylene with the purity being 99% or above is obtained through adsorption and drying. The method disclosed by the invention is simple in process operation, high in selectivity, few in side reaction and high in product purity, and has a very good application prospect.

Description

Technical field [0001] The present invention relates to a method of preparing an ethylene, belonging to the technical field of deuterated ethylene preparation. Background technique [0002] Deuterated ethylene, molecular formula C 2 Di 4 Is ethylene (C 2 Hide 4 Hydrogen (H) is in a form of substitution of its isotope deuterium (D). As a stable isotope special gas, deuterated ethylene plays a unique role in chemical chemistry, biochemistry, and medical, laser, and its industrialized production has a wide range of market prospects and economic benefits. [0003] Since the preparation method of ordinary ethylene is more suitable for the production of ethylene in large industries, the production of fine chemical products such as deuterated ethylene, is complex, low purity, low purity, and reduced deuteration ratio. . Currently, the prior art discloses the process of preparing iolecular acetylene with anhydrison, re-adding the preparation of deammonium, and has a high impurity content...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C07C1/26C07C11/04C07B59/00B01J27/138B01J27/122
CPCC07C1/26B01J27/122B01J27/138C07B59/001C07B2200/05C07C11/04Y02P20/52
Inventor 刘晓林陈欢王雪鹏许东海代伟娜董云峰郭大伟王双超
Owner 718TH RES INST OF CHINA SHIPBUILDING INDAL CORP