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    • 7. 发明申请
    • HYDROGENATION CATALYST AND METHOD FOR PREPARING TETRAHYDROFURAN
    • 氢化催化剂及其制备四氢呋喃的方法
    • WO1992002298A1
    • 1992-02-20
    • PCT/US1991005165
    • 1991-07-26
    • E.I. DU PONT DE NEMOURS COMPANY
    • E.I. DU PONT DE NEMOURS COMPANYERNST, Richard, EdwardMICHEL, John, Byrne
    • B01J23/89
    • C07D307/08B01J23/6567B01J23/8986
    • Hydrogenation in a back-mixed reactor or plug flow reactor of a hydrogenatable precursor such as maleic acid to tetrahydrofuran in the presence of a tri- or polymetallic catalytic composite consisting essentially of a combination of a catalytically effective amount of palladium, rhenium and one or more metals selected from rhodium, cobalt, platinum, ruthenium, iron, thulium, cerium, yttrium, neodymium, aluminum, praesodymium, holmium, copper, samarium, europium, hafnium, manganese, vanadium, chromium, gold, terbium, lutetium, nickel, scandium and niobium deposited on a support such as an activated, porous carbon carrier; and the continuous hydrogenation of a hydrogenatable precursor to tetrahydrofuran with hydrogen in a back mixed reactor in the presence of a suitable hydrogenation catalyst with continuous tetrahydrofuran removal while maintaining the concentration of acid within a predetermined range.
    • 在基本上由催化有效量的钯,铼和一种或多种钯的组合组成的三元或多金属催化复合物存在下,将可氢化前体如马来酸的反混合反应器或活塞流反应器氢化成四氢呋喃 选自铑,钴,铂,钌,铁,ium,铈,钇,钕,铝,镨,钬,铜,钐,铕,铪,锰,钒,铬,金,铽,镥,镍,钪 和沉积在诸如活化的多孔碳载体的载体上的铌; 以及在具有连续四氢呋喃去除的合适的氢化催化剂的存在下在背面混合的反应器中用氢气将可氢化前体连续氢化为四氢呋喃,同时保持酸的浓度在预定范围内。