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    • 2. 发明授权
    • Catalyst characterization apparatus
    • 催化剂表征装置
    • US06306349B1
    • 2001-10-23
    • US09449467
    • 1999-11-29
    • Dong Ju MoonKun You ParkMoon Jo ChungByoung Sung Ahn
    • Dong Ju MoonKun You ParkMoon Jo ChungByoung Sung Ahn
    • G01N3110
    • G01N15/0893G01N31/10G01N2015/0833
    • The present invention relates to a catalyst characterization apparatus, and in particular to an improved catalyst characterization apparatus which is capable of characterizing the surface of a catalyst more accurately by a volumetric method without requiring a pre-treatment step which may vary the characteristics of the catalyst as well as without exposing the catalyst in air, by combining a dynamic flow type reactor with a volumetric type adsorption apparatus, whereby it is possible to accurately characterize the catalyst during an actual reaction. It is possible to accurately characterize the various catalysts and to characterize the catalyst during the reaction, alternately and/or continuously, by combining a dynamic flow type reactor with a volumetric type characterization apparatus as well as a dynamic flow type characterization apparatus.
    • 本发明涉及一种催化剂表征装置,特别涉及一种改进的催化剂表征装置,其能够通过体积法更准确地表征催化剂的表面,而不需要可改变催化剂特性的预处理步骤 以及通过将动态流动型反应器与体积型吸附装置组合而不使空气中的催化剂暴露,由此可以在实际反应期间精确地表征催化剂。 可以通过组合动态流动型反应器与体积型表征装置以及动态流动型表征装置来交替地和/或连续地精确地表征各种催化剂并且在反应期间表征催化剂。
    • 4. 发明授权
    • Process for manufacturing 1,1,1,2-tetrafluoroethane
    • 制备1,1,1,2-四氟乙烷的方法
    • US5841007A
    • 1998-11-24
    • US630678
    • 1996-04-12
    • Byoung Sung AhnYoung Soo KwonKun You ParkMoon Jo Chung
    • Byoung Sung AhnYoung Soo KwonKun You ParkMoon Jo Chung
    • C07C17/20C07C17/21C07C19/08C07C17/00
    • C07C19/08C07C17/206C07C17/21
    • The present invention relates to a process for manufacturing 1,1,1,2-tetrafluoroethane (HFC-134a) from trichloroethylene (TCE) and hydrogen fluoride (HF) by reacting the HCFC-133a with the HF to produce the HFC-134a and reacting the TCE with the HF to produce 1-choro-2,2,2-trifluoroethane (HCFC-133a), characterized by that a part of said HF is mixed with the mixture containing the HFC-134a and the remaining portion of said HF is fed with said TCE in portions to at least two sections of a reactor for producing said HCFC-133a. According the present process, the temperature change in the reactor for producing HCFC-133a is maintained within a narrow range over the whole reaction procedures, and the catalytic activity is well maintained. Further, the formation of by-products is considerably prevented and thus the productivity is remarkably enhanced.
    • 本发明涉及通过使HCFC-133a与HF反应生成HFC-134a,从三氯乙烯(TCE)和氟化氢(HF)制备1,1,1,2-四氟乙烷(HFC-134a) 使TCE与HF反应以产生1-氯-2,2,2-三氟乙烷(HCFC-133a),其特征在于,将所述HF的一部分与含有HFC-134a和所述HF的剩余部分的混合物混合 与所述TCE一起供给至用于生产所述HCFC-133a的反应器的至少两个部分。 根据本方法,生产HCFC-133a的反应器中的温度变化在整个反应过程中保持在窄范围内,并且催化活性得到很好的维持。 此外,可以显着地防止副产物的形成,从而显着提高生产率。