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    Catalyst for aromatization of light hydrocarbons
    1.
    发明授权
    Catalyst for aromatization of light hydrocarbons 失效
    催化剂用于轻质烃的芳构化

    公开(公告)号：US5124293A

    公开(公告)日：1992-06-23

    申请号：US641908

    申请日：1991-01-16

    申请人： Lars-Peter Lindfors ,  Erja Rautiainen ,  Eeva-Liisa Lakomaa

    发明人： Lars-Peter Lindfors ,  Erja Rautiainen ,  Eeva-Liisa Lakomaa

    IPC分类号： B01J29/06 ,  B01J37/02 ,  C07B61/00 ,  C07C2/76 ,  C07C15/02 ,  C10G35/095 ,  C10G45/64 ,  C10G45/68

    CPC分类号： C10G45/68 ,  B01J29/061 ,  B01J37/0238 ,  C07C2/76 ,  C10G35/095 ,  C10G2400/02

    摘要： The present invention concerns a catalyst suited to the aromatization reaction of light hydrocarbons. Such a heterogeneous catalyst contains zinc bound to a zeolite support material. The catalyst in accordance with the invention is prepared by adsorbing the zinc onto the surface of the zeolite support material directly from the vapor phase by way of chemisorption. The zeolite compound acting thus as the support material is here heated to a temperature which is above the condensation temperature of the zinc vapor. Advantageously, the preparation has been carried out at temperatures above 390.degree. C. The zinc vapor has been brought to contact the zeolite support material, whereby the vapor pressure of zinc is maintained sufficiently high and the duration of its interaction with the support material sufficiently long so as to provide at least one equal amount of or, preferably, an excess of zinc in relation to the available binding sites of the support material. In order to avoid the desorption of absorbed zinc, temperature in the preparation reaction of the catalyst in accordance with the invention has been maintained below 550.degree. C.

    Process for the production of 2-butyl-2-ethyl-1,3-propanediol
    2.
    发明授权
    Process for the production of 2-butyl-2-ethyl-1,3-propanediol 失效
    2-丁基-2-乙基-1,3-丙二醇的制备方法

    公开(公告)号：US06369281B1

    公开(公告)日：2002-04-09

    申请号：US09242656

    申请日：2000-05-30

    申请人： Lars-Peter Lindfors ,  Kalevi Heinola ,  Kari Kulmala ,  Hannele Hakanp{umlaut over (aa)}-Laitinen ,  Lea Rintala ,  Lea Parkkinen ,  Vesa-Matti Lehtinen

    发明人： Lars-Peter Lindfors ,  Kalevi Heinola ,  Kari Kulmala ,  Hannele Hakanp{umlaut over (aa)}-Laitinen ,  Lea Rintala ,  Lea Parkkinen ,  Vesa-Matti Lehtinen

    IPC分类号： C07C3118

    CPC分类号： C07C29/38 ,  C07C31/20

    摘要： The present invention concerns a process for producing 2-butyl-2-ethyl-1,3-propanediol. According to the process, a reaction mixture is formed, containing 2-ethylhexanal and formaldehyde, into which an hydroxide compound is fed, whereby 2-ethylhexanal and formaldehyde are reacted to to produce 2-butyl-2-ethyl-1,3-propanediol. According to the invention, the hydroxide compound is incrementally fed into the reaction mixture. Preferably the hydroxide compound is fed at least at two input rates, in such a way that the heat production of the reaction between 2-ethylhexanal and formaldehyde immediately after each increase of the input rate of the hydroxide compound, is at least almost the same. The invention allows for the production of BEPD in a controlled and safe manner, with excellent yields.

    摘要翻译： 本发明涉及一种生产2-丁基-2-乙基-1,3-丙二醇的方法。 根据该方法，形成含有2-乙基己醛和甲醛的反应混合物，向其中加入氢氧化物，由此使2-乙基己醛和甲醛反应，生成2-丁基-2-乙基-1,3-丙二醇 。 根据本发明，向反应混合物中逐渐加入氢氧化物。 优选地，氢氧化物化合物至少以两个输入速率进料，使得在每次增加氢氧化物化合物的输入速率之后，2-乙基己醛和甲醛之间的反应的热产生至少几乎相同。 本发明允许以控制和安全的方式生产BEPD，具有优异的产率。