| 摘要 |
The ether having a tertiary alkyl group is obtained by the reaction of a primary or secondary alcohol with a tertiary olefin which is part of a tertiary olefin-containing hydrocarbon mixture. The reaction is carried out in the presence of an adduct of the starting alcohol with a heteropoly acid or salt thereof containing at least one element selected from P, Si, B, Ge, As, Se, Ti, Zr, Mn, F, U, Ce and Th as a central element, at least Mo and/or W as a coordinating element and at least one cation selected from H, Li, Na, K, Rb, Cs, NR<4>R<5>R<6>R<7> wherein R<4>, R<5>, R<6> and R<7> are hydrogen atoms or alkyl groups, Mg, Ca, Ba, Zr, Cr, Mn, Fe, Co, Ni, Cu, Ag, Zn, Cd, Hg, Al, Pb and Bi. The ratio of the number of coordinating elements to the number of central elements is from 2.5:1 to 12:1. The adduct is substantially in the solid phase, and the reaction is carried out under a pressure higher than the pressure at which the hydrocarbon mixture containing the tertiary olefin is kept in the liquid phase. The reaction under the above conditions enables a reduction of the amount of excess of the alcohol required to a molar ratio of alcohol:tertiary olefin of 1.2:1 or less, and the enhancement of the conversion of the tertiary olefin. |
