[EN] PROCESS FOR THE PREPARATION OF METAL ACETYLACETONATES<br/>[FR] PROCEDE DE PREPARATION D'ACETYLACETONATES DE METAL
申请人:COUNCIL SCIENT IND RES
公开号:WO2004056737A1
公开(公告)日:2004-07-08
The present invention provides an improved, economical and environmmentally benign process for metal complexes of acetylacetone having the general formula, M(acac)n wherein M is a metal cation selected from the group consisting of Fe, Co, Ni, Cu, Zn, Al, Ca, Mg, Mo, Ru, Re, U, Th, Ce, Na, K, Rb, Cs, V, Cr, and Mn etc., n is an integer which corresponds to the electrovalence of M, are obtained by reacting the corresponding metal hydroxide, metal hydrated oxide or metal oxide with a stoichiometric amount of acetylacetone and separating the product.
本发明提供了一种改进的、经济的和环境友好的金属乙酰丙酮络合物的过程,其具有一般公式 M(acac)n,其中 M 是从 Fe、Co、Ni、Cu、Zn、Al、Ca、Mg、Mo、Ru、Re、U、Th、Ce、Na、K、Rb、Cs、V、Cr 和 Mn 等组成的金属阳离子中选择的,n 是与 M 的电价对应的整数,通过将相应的金属氢氧化物、金属水合氧化物或金属氧化物与等量的乙酰丙酮反应并分离产物获得。
[EN] PROCESSES FOR THE PREPARATION OF 2-CHLORO-1,1,1,2,3,3,3-HEPTAFLUOROPROPANE, HEXAFLUOROPROPENE AND 1,1,1,2,3,3,3-HEPTAFLUOROPROPANE<br/>[FR] PROCEDES DE PREPARATION DE 2-CHLORO-1,1,1,2,3,3,3-HEPTAFLUOROPROPANE, HEXAFLUOROPROPENE ET DE 1,1,1,2,3,3,3-HEPTAFLUOROPROPANE
申请人:DU PONT
公开号:WO2004018397A1
公开(公告)日:2004-03-04
A process for the preparation of 2-chloro-1,1,1,3,3,3-heptafluoropropane is disclosed which involves (a) contacting a mixture comprising hydrogen fluoride, chlorine, and at least one starting material selected from the group consisting of halopropenes of the formula CX3CCl=CX2 and halopropanes of the formula the CX3CClYCX3, wherein each X is independently F or Cl, and Y is H, Cl or F (provided that the number of X and Y which are F totals no more than six) with a chlorofluorination catalyst in a reaction zone to produce a product mixture comprising CF3CClFCF3, HCl, HF, and underfluorinated halogenated hydrocarbon intermediates. The process is characterized by said chlorofluorination catalyst comprising at least one chromium-containing component selected from (i) a crystalline alpha-chromium oxide where at least 0.05 atom % of the chromium atoms in the alpha-chromium oxide lattice are replaced by nickel, trivalent cobalt or both nickel and trivalent cobalt, provided that no more than 2 atom % of the chromium atoms in the alpha-chromium oxide lattice are replaced by nickel and that the total amount of chromium atoms in the alpha-chromium oxide lattice that are replaced by nickel and trivalent cobalt is no more than 6 atom % , and (ii) a fluorinated crystalline oxide of (i).Also disclosed is a process for the manufacture of a mixture of HFC-227ea and hexafluoropropene by reacting a starting mixture comprising CFC-217ba and hydrogen in the vapor phase at an elevated temperature, optionally in the presence of a hydrogenation catalyst. This process involves preparing the CFC-217ba by the process described above.
公开了一种制备2-氯-1,1,1,3,3,3-七氟丙烷的方法,其中涉及(a)将氢氟酸、氯和至少一种起始物质与氯氟化催化剂在反应区接触,所述起始物质选择自公式CX3CCl=CX2的卤代丙烯和公式CX3CClYCX3的卤代丙烷群,其中每个X独立地为F或Cl,Y为H、Cl或F(前提是F的数量不超过六个),以产生包含CF3CClFCF3、HCl、HF和低氟化卤代碳氢化合物中间体的产物混合物。该过程的特点在于所述氯氟化催化剂包含至少一种含铬组分,所述含铬组分选择自(i)晶体α-氧化铬,其中α-氧化铬晶格中至少0.05%的铬原子被镍、三价钴或镍和三价钴替代,前提是α-氧化铬晶格中不超过2%的铬原子被镍替代,且α-氧化铬晶格中被镍和三价钴替代的铬原子的总量不超过6%,以及(ii)上述(i)的氟化晶体氧化物。还公开了一种制备HFC-227ea和六氟丙烯混合物的方法,该方法通过在高温下在蒸汽相中反应CFC-217ba和氢的起始混合物制备CFC-217ba,可选地在氢化催化剂的存在下进行。该过程涉及上述描述的制备CFC-217ba的方法。