Abstract: The present invention relates to a process for the preparation of a large-pore molecular sieve, comprising crystallizing the molecular sieve from a starting mixture at a pH in the range of from 3 to 8, and recovering a large-pore molecular sieve, the said starting mixture having a molar composition satisfying the following molar ratio's:(0.01-2)R.sub.2/n O):(0-1.5)M.sub.2/m O:(0-0.5)X.sub.2 O.sub.3 :1YO.sub.2 :(5-1000)H.sub.2 O:(0.01-3)F.sup.-,wherein n and m are the weighted average valences of R and M respectively, M is an alkali- or alkaline earth metal, X is a trivalent metal and Y is a tetravalent element, wherein R comprises at least one main organic template R.sub.m having the formula R.sub.1 R.sub.2 R.sub.3 R.sub.4 Q.sup.+ wherein Q is nitrogen or phosphorus and wherein at least one and at most three of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is an aryl or alkyl group having 6 to 36 carbon atoms and each of the remainder of R.sub.1, R.sub.2, R.sub.3 and R.sub.

Abstract: An improved hydroconversion process, particularly a hydrocracking process, employs a supported catalyst containing metals of Group VI and/or VIII. The catalyst support comprises a crystalline aluminosilicate of the zeolite Y type, a binder and a dispersion of silica-alumina in an alumina matrix. The catalyst support composition comprises less than 25% by weight of the zeolite material, more than 25% by weight of the binder and at least 30% by weight of the dispersion.

Abstract: Process for upgrading a paraffinic feedstock which includes: a) supplying the feedstock and an olefins-containing stream at a paraffin to olefin volume ratio greater than 2 to a reactor containing a zeolite-beta catalyst; and b) removing the upgraded product; wherein the process is operated at an olefin conversion of at least 90 mol % in an external circulation reactor having an extent of external circulation of liquid reactor content expressed as ##EQU1## of greater than 2 wherein .phi./v is the volumetric flow rate of feedstock and olefins-containing stream and .phi./vc is the volumetric external circulation flow rate, and upgraded products produced by the process.

Abstract: A process is disclosed for the preparation of a light hydrocarbon oil distillate by (1) hydrocracking a vacuum distillate, (2) separating the product of (1) into distillates and a residue, (3) catalytic cracking the residue obtained in (2) and a portion of the vacuum distillate to thereby isolate a light hydrocarbon oil distillate.

Abstract: Distillates are prepared from asphaltenes-rich feeds by a process comprising subjecting the feed to solvent deasphalting, and subjecting the resulting asphaltic bitumen fraction to a combination of catalytic hydrotreating and thermal cracking.

Abstract: In the preparation of a heavy oil with a low Ramsbottom Carbon Test (RCT) from a long residue by a two-stage process comprising catalytic hydrotreatment followed by solvent deasphalting and recycle of the asphalt to the first stage the catalytic hydrotreatment for RCT reduction in the first stage is carried out at such a severity that the C.sub.4.sup.- gas production per percent RCT reduction is kept between defined limits.

Abstract: Process for the preparation of a heavy oil with a low Ramsbottom Carbon Test (RCT) from a long residue by (a) catalytic hydrotreatment for RCT reduction at such severity that the C.sub.4.sup.- gas production per percentage RCT reduction is kept between defined limits, followed by (b) solvent deasphalting of the (vacuum or atmospheric) distillation residue of the hydrotreated product.

Abstract: Process for the preparation of a heavy oil with a low Ramsbottom Carbon Test (RCT) from an asphalt by (a) catalytic hydrotreatment for RCT reduction at such severity that the C.sub.4.sup.- gas producton per percentage RCT reduction is kept between defined limits, followed by (b) solvent deasphalting of the (vacuum or atmospheric) distillation residue of the hydrotreated product.

Abstract: Process for the preparation of a heavy oil with a low Ramsbottom Carbon Test (RCT) from a short residue by (a) catalytic hydrotreatment for RCT reduction at such severity that the C.sub.4.sup.- gas production per percentage RCT reduction is kept between defined limits, followed by (b) solvent deasphalting of the (vacuum or atmospheric) distillation residue of the hydrotreated product.

Abstract: In the preparation of a heavy oil with a low Ramsbottom Carbon Test (RCT) from a precipitation asphalt by a two-stage process comprising catalytic hydrotreatment followed by solvent deasphalting and recycle of the separated asphalt to the first stage, the catalytic hydrotreatment for RCT reduction in the first stage is carried out at such severity that the C.sub.4.sup.- gas production per percent RCT reduction is kept between defined limits.

Abstract: In the preparation of a heavy oil with a low Ramsbottom Carbon Test (RCT) from a short residue by a two-stage process comprising catalytic hydrotreatment followed by solvent deasphalting and recycle of the asphalt to the first stage, the catalytic hydrotreatment for RCT reduction in the first stage is carried out at such severity that the C.sub.4.sup.- production per percent RCT reduction is kept between defined limits.

Abstract: A Process is disclosed for the preparation of zeolite ferrierite of high purity by hydrothermal crystallization from a starting mixture containing at least one compound selected from piperidine and alkyl-substituted piperidines.

Abstract: Novel crystalline silicates which in dehydrated form have the composition in terms of moles of the oxides: (1.0.+-.0.3)(R).sub.2/n O.[aFe.sub.2 O.sub.3.bAl.sub.2 O.sub.3.cGa.sub.2 O.sub.3.y(dSiO.sub.2.eGeO.sub.2)], wherein R is one or more mono- or bivalent cations and a, b, c, d, e, y and n are as defined hereinafter are disclosed. The thermally stable silicates are suitably employed as extracting agents, drying agents, ion exchange agents, catalysts and catalyst carriers.

Abstract: Novel crystalline silicates which in dehydrated form having the composition in terms of moles of the oxides: (1.0.+-.0.3) (R).sub.2/n O. [a Fe.sub.2 O.sub.3. b Al.sub.2 O.sub.3. c Ga.sub.2 O.sub.3. y(dSiO.sub.2. eGeO.sub.2)], wherein R is one or more mono- or bivalent cations and a, b, c, d, e, y and n are as defined hereinafter are disclosed. The thermally stable silicates are suitably employed as extracting agents, drying agents, ion exhange agents, catalysts and catalyst carriers.

Abstract: A process is disclosed for suppressing the increase in specific average pore diameter which often occurs when a silica is subjected to a hydrothermal treatment, which includes the presence of one or more compounds of the elements lithium, potassium, sodium, rubidium, cesium, strontium or barium and which also includes in the hydrothermal treatment an added amount of at least one water-soluble titanium compound in an amount of about 0.1-5 grams per 100 grams of silica.