23153-23-3Relevant articles and documents
Process for coproducing trans - HFO-1234 ze and cis - HFO-1234 ze
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Paragraph 0067-0070; 0073-0075; 0077-0079; 0086-0088; ..., (2021/10/27)
The invention relates to a vinyl chloride (CH). 2 = CHCl) And carbon tetrachloride (CCl)4 For the production of trans HFO-1234 ze and cis HFO-1234 ze from the starting materials. Vinyl chloride (CH)2 = CHCl) And carbon tetrachloride (CCl)4 In a catalytic system composed of a chlorinated metal salt/molecular sieve catalyst and N and N - dimethylethylamine, HCC-240 fa is synthesized by telomerization and is subjected to a fluorination reaction in HCC reactor, 240 is alumina in a second reactor, and contains θ-Al and 3rd. 2 O3 Sum α-Al2 O3 The trans - HFO-1234 ze is converted into cis - HFO-1234 ze under the action of the isomerization catalyst of the mixed crystal phase, and finally, trans HFO-1234 ze is obtained through multistage separation tower and extraction separation. Cis HFO-1234 ze product.
Preparation method of 2,3,3,3-tetrafluoropropene
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Paragraph 0030-0032; 0044-0046; 0058-0060; 0072-0074, (2019/04/26)
The invention discloses a preparation method of 2,3,3,3-tetrafluoropropene. The preparation method comprises the steps: performing telomerization on chloroethylene and CCl4 so as to produce 1,1,1,3,3-pentachloropropane, then performing dehydrochlorination so as to generate 1,1,3,3-tetrachloro-1-propylene, performing exchange of fluorine and chlorine and dehydrochlorination so as to prepare 3,3,3-trifluoro-1-chloropropene, then performing an isomerization reaction so as to obtain 3,3,3-trifluoro-2-chloropropene, performing a liquid phase fluorination reaction so as to synthesize 1,1,1,2-tetrafluoro-2-chloropropane, and finally performing dehydrochlorination so as to obtain 2,3,3,3-tetrafluoropropene. The raw materials have low price, and are easy to obtain, so that the raw material cost inthe production process of 2,3,3,3-tetrafluoropropene is reduced; an industrial chain is formed in the reaction process, and highly-economic values are provided through purification of the intermediateproducts; the reaction conditions are mild, the equipment has simple operation, the raw material conversion rate and product selectivity are high at the reaction stages, and by-products are few, so that a large industrial application prospect is achieved.
METHOD FOR PRODUCING FLUOROCARBON USING HYDROHALOFLUOROPROPENE
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Paragraph 0327; 0328; 0329; 0330; 0344; 0345; 0346; 0352, (2018/07/31)
PROBLEM TO BE SOLVED: To provide a method for selectively producing fluorocarbon by efficiently isomerizing a hydrofluoropropene isomer (isomer 1) under the reduction of catalytic performance to produce a corresponding hydrohalofluoropropene isomer (isomer 2) and using the same. SOLUTION: Provided is a method for producing 3,3,3-trifluoropropene by contacting a 1-halogeno-3,3,3-trifluoropropene isomer with a moisture concentration of 100 ppm or lower (isomer 1) in a vapor phase so as to be isomerized to produce a corresponding 1-halogeno-3,3,3-trifluoropropene isomer (isomer 2), and subjecting the 1-halogeno-3,3,3-trifluoropropene isomer (isomer 2) to dehalogenation. SELECTED DRAWING: Figure 1 COPYRIGHT: (C)2018,JPOandINPIT