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北京石油化工学院2026年研究生招生接收调剂公告
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Assisson

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5-氯-2-氨基三氟甲苯工艺方案
1、侧链氯化:甲苯在催化剂存在下,通入氯气得三氯甲苯。
2、氟化:三氯甲苯在氟化氢和催化剂存在下,升温反应得三氟甲苯粗产品,常压精馏得三氟甲苯。
3、环氯化:三氟甲苯在催化剂的存在下,通入氯气得间氯三氟甲苯粗产品,减压精馏得间氯三氟甲苯。
4、硝化:间氯三氟甲苯在硫酸与硝酸的存在下,常温反应得5-氯-2-硝基三氟甲苯粗产品,减压精馏得成品。
5、还原:5-氯-2-硝基三氟甲苯在甲醇和催化剂的存在下,通入氢气的粗产品,回收甲醇后,减压精馏得产品。

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武汉一心一译

捐助贵宾 (著名写手)


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Assisson: 金币+20, 翻译EPI+1, ★★★很有帮助 2015-07-28 10:15:32
5-氯-2-氨基三氟甲苯工艺方案
Technological Process for 2-Amino-5-chlorobenzotrifluoride

1、侧链氯化:甲苯在催化剂存在下,通入氯气得三氯甲苯。
1,side chain chlorination: With the presence of methylbenzene as catalyst, the trichlorotoluene can be obtained by ventilating chlorine gas

2、氟化:三氯甲苯在 氟化氢和催化剂存在下,升温反应得三氟甲苯粗产品,常压精馏得三氟甲苯。
2, Fluorinatio: Under the effect of hydrogen fluoride and catalyst, trichlorotoluene can be reacted into crude trifluorotoluene by increasing reaction temperaturem and then become the refined trifluorotoluene through
normal pressure rectification.

3、环氯化:三氟甲苯在 催化剂的存在下,通入氯气 得 间氯三氟甲苯粗产品,减压精馏

得间氯三氟甲苯。
3, Cyclizing chlorination: With the presence of catalyst, the trifluorotoluene can be firstly reacted into crude chlorobenzotrifluoride and then become the refined the product by vacuum distillation

4、硝化:间氯三氟甲苯 在硫酸与硝酸的存在下,常温反应得 5-氯-2-硝基三氟甲苯 粗产品,减压精馏得成品。
4, nitration: With the presence of sulfuric acid and nitric acid, the chlorobenzotrifluoride will be first reacted into crude 5-chloro-2-nitrobenzotrifluoride under normal temperature, and then become the refined product through vacuum distillation.


5、还原:5-氯-2-硝基三氟甲苯 在 甲醇和催化剂的存在下,通入氢气的粗产品,回收甲醇后,减压精馏得产品。
5, Reduction reaction: With the presence of methyl alcohol and catalyst, by ventilating hydrogen, firstly the crude  5-chloro-2-nitrobenzotrifluoride can be prepared, then the refined product can be obtained by recycling the waste methyl alcohol within and vacuum distillation.
2楼2015-07-26 20:57:15
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hitoli

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Assisson: 金币+10, ★★★很有帮助 2015-07-28 10:15:51
Technology program for 5-chloro-2-aminotrifluorotoluene
1.        chlorizatoin of side-chain: trichlorotoluene is obtained through toluene reacting with chlorine in the presence of catalyst.
2.        fluorization: trichlorotoluenen, in the presence of hydrogen fluoride and catalysts, was heated to obtain rude trifluorotoluene, which was distilled to trifluorotoluene under atomosphere.
3.        ring chlorination: trifluorotoluene reacted with chlorine in the presence of catalysts to obtain  crude meso-chlorotrifluorotoluene, which was distilled to meso-chlorotrifluorotoluene under reduced pressure.
4.        nitration: meso-chlorotrifluorotoluene reacted in the presence of sulfuric acid and nitric acid under room temperature to get raw 5-chloro-2-nitrotrifluorotoluene, which was distilled to product under reduced pressure.
5.        reduction: 5-chloro-2-nitrotrifluorotoluene reacted with hydrogen in the presence of methanol and catalysts to get raw product, which was distilled to product under reduced pressure after recycle of methanol.
3楼2015-07-26 21:07:42
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