公开(公告)号：KR1020020045235A

公开(公告)日：2002-06-19

申请号：KR1020000074615

申请日：2000-12-08

Applicant: 한국과학기술연구원

Inventor： 안병성 ,  송정환 ,  문동주 ,  박건유

IPC: B01J23/44 ,  B01J37/02

CPC classification number: B01J37/22 ,  B01J21/18 ,  B01J23/44 ,  C07C17/23 ,  C07C19/08

Abstract: PURPOSE: Provided is a palladium catalyst which is used in a dehydrochlorination reaction such as changing HCFC to HFC. Presented also are the catalyst and the reaction conditions that bring about the high yield at low temperature and maintain the activity and the selectivity for a long period of time. CONSTITUTION: The preparation method of the catalyst and reaction method comprise: continuously treating activated carbon with aqueous solutions of HF and HCl and dipping palladium into it; reducing the above catalyst with hydrogen at 200-300°C before the dehydrochlorination reaction; and making 1,1-difluoroethane from 1,1-difluoro-1-chloroethane using the above catalyst(Pd/C) by dehydrochlorination reaction at 240-300°C and feeding 1,1-difluoro-1-chloroethane and hydrogen gas in a ratio of 2-6.

Abstract translation: 目的：提供一种钯催化剂，其用于脱氯化氢反应，例如将HCFC改为HFC。 还提出了在低温下产生高产率并长期维持活性和选择性的催化剂和反应条件。 构成：催化剂的制备方法和反应方法包括：用HF和HCl水溶液连续处理活性炭，并将钯浸入其中; 在脱氯化氢反应前，在200-300℃用氢还原上述催化剂; 并使用上述催化剂（Pd / C），在240-300℃下通过脱氯化氢反应从1,1-二氟-1-氯乙烷制备1,1-二氟乙烷，并加入1,1-二氟-1-氯乙烷和氢气 比例为2-6。

公开(公告)号：KR100383216B1

公开(公告)日：2003-05-12

申请号：KR1020000074615

申请日：2000-12-08

Applicant: 한국과학기술연구원

Inventor： 안병성 ,  송정환 ,  문동주 ,  박건유

IPC: B01J23/44 ,  B01J37/02

CPC classification number: B01J37/22 ,  B01J21/18 ,  B01J23/44 ,  C07C17/23 ,  C07C19/08

Abstract: The present invention relates to a catalyst for producing 1,1-difluoroethane (HCFC-152a) and producing method thereof. More particularly, it is to provide the catalyst prepared by impregnating palladium on the active carbon pretreated with an aqueous hydrogen fluoride solution and an aqueous hydrogen chloride solution in series and its use in the production of 1,1-difluoroethane (HCFC-142b) by dehydrochlorinating 1,1-difluoro-1-chloroethane at 240-300° C. in the supplying molar ratio of 2-6 (H2/HCFC-142b) with maximizing a selectivity toward the product of HCFC-152a.

Abstract translation: 本发明涉及制造1,1-二氟乙烷（HCFC-152a）的催化剂及其制造方法。 更具体地说，是提供一种通过在用氟化氢水溶液和氯化氢水溶液预处理过的活性炭上串联浸渍钯制备的催化剂及其在制备1,1-二氟乙烷（HCFC-142b）中的用途， 在240-300℃下将1,1-二氟-1-氯乙烷脱氯化氢; C.供应摩尔比为2-6（H 2 / HCFC-142b），同时使对HCFC-152a产物的选择性最大化。