知搜-全球专利检索

  1. 登录
  2. 注册
发明授权
CN102151576B 一种用于氟化氯代烯烃的催化剂及其制备方法 失效 - 权利终止

一种用于氟化氯代烯烃的催化剂及其制备方法
摘要：
一种用于氟化氯代烯烃的催化剂，以α-AlF3为载体，Cr2O3为活性组分，Cr2O3负载在α-AlF3载体上，Cr2O3的质量是α-AlF3质量的0.6％～13％，该催化剂的比表面积为90～125m2g-1。该催化剂采用浸渍法将铬的可溶性盐溶液浸渍到氧化铝上，经干燥、煅烧制得Cr2O3-γ-Al2O3复合氧化物，再将蔗糖水溶液浸渍到Cr2O3-γ-Al2O3复合氧化物，并在N2气氛下将蔗糖经过炭化转化为炭，得到含炭的Cr2O3-γ-Al2O3复合氧化物，用HF和N2混合气体对含炭的Cr2O3-γ-Al2O3复合氧化物进行氟化，使含炭的Cr2O3-γ-Al2O3复合氧化物转化为含炭的Cr2O3-α-AlF3复合物，最后通过燃烧法脱除炭，得到该催化剂。
摘要（英）：

The invention discloses a catalyst for fluoridizing chlorinated olefin. Alpha-AlF3 is used as a carrier, Cr2O3 is used as an active component, the Cr2O3 is loaded on the alpha-AlF3 carrier, the mass of the Cr2O3 is 0.6-13 percent of that of the alpha-AlF3, and the specific surface area of the catalyst is 90-125m<2>g<-1>. The catalyst is prepared by adopting the steps of: dipping a chromic solublesalt solution on aluminum oxide by adopting a dipping method, drying and calcining to prepare a Cr2O3-gamma-AlO3 composite oxide; dipping a cane sugar water solution to the Cr2O3-gamma-AlO3 compositeoxide, converting cane sugar into carbon through carbonization in the presence of N2 to obtain a carbon-containing Cr2O3-gamma-AlO3 composite oxide, fluoridizing the carbon-containing Cr2O3-gamma-AlO3 composite oxide by using an HF and N2 mixed gas to ensure that the carbon-containing Cr2O3-gamma-AlO3 composite oxide is converted into a carbon-containing Cr2O3-alpha-AlO3 composite; and finally, removing carbon through a combustion method.

公开/授权文献
0/0