Abstract:
A process is described for the preparation of phenol by the hydrodeoxygenation of polyhydroxylated benzene derivatives or by the selective hydroxylation of benzene under depletive conditions, characterized in that the above-mentioned reactions are carried out in the presence of a catalyst based on multi component metal oxides comprising at least one metal selected from the groups VB, VIB, VIII, IB, IIB, IVA, VA.
Abstract:
A process is described for the preparation of phenol by the hydrodeoxygenation of polyhydroxylated benzene derivatives or by the selective hydroxylation of benzene under depletive conditions, characterized in that the above-mentioned reactions are carried out in the presence of a catalyst based on multi component metal oxides comprising at least one metal selected from the groups VB, VIB, VIII, IB, IIB, IVA, VA.
Abstract:
The present invention relates to a method for the removal of the templating agent from synthetic zeolites in general and in particular from silicalite, titanium silicalite and from composite materials containing zeolites and for their activation as catalysts. The method consists in treating the above materials with solvents in vapor phase and at a low temperature.
Abstract:
A process is described for the preparation of phenol by the hydrodeoxygenation of polyhydroxylated benzene derivatives or by the selective hydroxylation of benzene under depletive conditions, characterized in that the above-mentioned reactions are carried out in the presence of a catalyst based on multi component metal oxides comprising at least one metal selected from the groups VB, VIB, VIII, IB, IIB, IVA, VA.
Abstract:
Preparation of zeolites having the formula:(1.5.+-.0.6) M.sub.2/n O.Al.sub.2 O.sub.3.ySiO.sub.2.zH.sub.2 O[wherein y ranges from 20 to 90, z ranges from 2 to 12, M is at least one cation and n is the valence of M], comprising the admixing of diethyl-piperidinium hydroxide, or a salt thereof, with H.sub.2 O and with at least one Na compound, one Al compound and one Si compound, the molar ratios (ratios of oxides) being:SiO.sub.2 :Al.sub.2 O.sub.3 =from 20 to 120;H.sub.2 O:Na.sub.2 O=from 50 to 600;Na.sub.2 O:SiO.sub.2 =from 0.07 to 0.50;(DEPP).sub.2 O:SiO.sub.2 =from 0.05 to 0.50.The invention concerns also the thus obtained zeolites and their use for acid-catalyzed conversions of hydrocarbons.
Abstract translation:具有下式的沸石的制备:(1.5 +/- 0.6)M2 / nO.Al2O3.Y SiO2。 Z H 2 O,其中Y为20至90,Z为2至12,M为至少一个阳离子,n为M的化合价; 所述制备包括将二乙基 - 哌啶鎓氢氧化物[(DEPP)+ OH]或其盐与水和:a)至少一种钠化合物混合; b)至少一种铝化合物; c)至少一种硅化合物; 以氧化物的比率表示的摩尔比各自在以下范围内:SiO 2:Al 2 O 3 = 20〜120 Na 2 O:SiO 2 = 0.07〜0.50(DEPP)2 O:SiO 2 = 0.05〜0.50H 2 O:Na 2 O = 本发明还涉及通过所述制备获得的沸石及其用于某些酸催化转化烃的用途。
Abstract:
A process is described for the preparation of phenol by the hydrodeoxygenation of polyhydroxylated benzene derivatives or by the selective hydroxylation of benzene under depletive conditions, characterized in that the above-mentioned reactions are carried out in the presence of a catalyst based on multi component metal oxides comprising at least one metal selected from the groups VB, VIB, VIII, IB, IIB, IVA, VA.
Abstract:
The invention concerns a catalytic process for the manufacture of oximes by ammoximation of the corresponding carbonyl compounds, characterized in that the catalyst is a solid composition consisting of silicon, titanium and oxygen, chemically combined with each other, and in that the titanium amount, expressed as TiO.sub.2, ranges from 1 to 95% by weight, the XR diffractogam of said composition being a smooth-trend line (halo), typical of the amorphous solids.