Abstract: The invention relates to a catalyst for the transformation of hydrocarbon-containing feedstocks, in particular hydrotreatment, comprising at least one metal of group VIIB and at least one hydro-dehydrogenating metal (of the non-noble metals of group VIII and/or the metals of group VIB, preferably molybdenum or tungsten) and at least one porous matrix, generally of the amorphous oxide or poorly crystallized type. The catalyst also contains silicon, boron, or phosphorus. It can also optionally contain at least one halogen.

Abstract: The present invention relates to a hydrocracking process including contacting a hydrocarbon feed with a catalyst which is carried out at a pressure of at least 2 MPa, a temperature of at least 230° C., using a quantity of hydrogen of at least 100 Nl hydrogen/l of feed and with an hourly space velocity of 0.1-10 h−1. The catalyst includes 0.1-99.7% by weight of at least one alumina matrix; 0.1-80% by weight of at least one globally non dealuminated Y zeolite with a lattice parameter of more than 2.438 nm, a global SiO2/Al2O3 mole ratio of less than 8, and a framework SiO2/Al2O3 mole ratio of less than 21 and more than the global SiO2/Al2O3 mole ratio; 0.1-30% by weight of at least one group VIII metal and/or 1-40% by weight of at least one group VIB metal (% oxide); 0.1-20% by weight of at least one promoter element selected from the group formed by boron and silicon (% oxide); 0-20% by weight of at least one group VIIA element; 0-20% by weight of phosphorous (% oxide); and 0.

Abstract: The invention provides a catalyst including a support, at least one noble metal from group VIII of the periodic table, silicon as a dopant, optionally boron, optionally at least one group VIB element, optionally phosphorous and optionally at least one halogen. The invention also provides a particular preparation of the catalyst. The invention also concerns the use of this catalyst in the hydrotreatment of hydrocarbon-containing feeds, more particularly its use for hydrogenating aromatic compounds in a gas oil cut.

Abstract: A catalyst comprising 0.1-99.7% by weight of at least one alumina matrix; 0.1-80% by weight of at least one globally non dealuminated Y zeolite with a lattice parameter of more than 2.438 nm, a global SiO2/Al2O3 mole ratio of less than 8, and a framework SiO2/Al2O3 mole ratio of less than 21 and more than the global SiO2/Al2O3 mole ratio; 0.1-30% by weight of at least one group VIII metal and/or 1-40% by weight of at least one group VIB metal (% oxide); 0.1-20% by weight of at least one promoter element selected from the group formed by boron and silicon (% oxide); 0-20% by weight of at least one group VIIA element; 0-20% by weight of phosphorous (% oxide); 0.1-20% by weight of at least one group VIIB element, useful for hydrocracking processes, especially at low pressures of 7.5 to 11 MPa.

Abstract: The invention provides a catalyst including a support, at least one noble metal from group VIII of the periodic table, silicon as a dopant, optionally boron, optionally at least one group VIB element, optionally phosphorous and optionally at least one halogen. The invention also provides a particular preparation of the catalyst. The invention also concerns the use of this catalyst in the hydrotreatment of hydrocarbon-containing feeds, more particularly its use for hydrogenating aromatic compounds in a gas oil cut.

Abstract: A catalyst comprising 0.1-99.7% by weight of at least one alumina matrix; 0.1-80% by weight of at least one globally non dealuminated Y zeolite with a lattice parameter of more than 2.438 nm, a global SiO2/Al2O3 mole ratio of less than 8, and a framework SiO2/Al2O3 mole ratio of less than 21 and more than the global SiO2/Al2O3 mole ratio; 0.1-30% by weight of at least one group VIII metal and/or 1-40% by weight of at least one group VIB metal (% oxide); 0.1-20% by weight of at least one promoter element selected from the group formed by boron and silicon (% oxide); 0-20% by weight of at least one group VIIA element; 0-20% by weight of phosphorous (% oxide); 0.1-20% by weight of at least one group VIIB element, useful for hydrocracking processes, especially at low pressures of 7.5 to 11 MPa.

Abstract: A catalyst comprising 0.1-99.7% by weight of at least one alumina matrix; 0.1-80% by weight of at least one globally non dealuminated Y zeolite with a lattice parameter of more than 2.438 nm, a global SiO2/Al2O3 mole ratio of less than 8, and a framework SiO2/Al2O3 mole ratio of less than 21 and more than the global SiO2/Al2O3 mole ratio; 0.1-30% by weight of at least one group VIII metal and/or 1-40% by weight of at least one group VIB metal (% oxide); 0.1-20% by weight of at least one promoter element selected from the group formed by boron and silicon (% oxide); 0-20% by weight of at least one group VIIA element; 0-20% by weight of phosphorous (% oxide); 0.1-20% by weight of at least one group VIIB element, useful for hydrocracking processes, especially at low pressures of 7.5 to 11 MPa.

Abstract: The invention concerns an alumina based catalyst containing, expressed as the oxide content by weight, 2-10% by weight of cobalt oxide CoO, 10-30% by weight of molybdenum oxide MoO3 and 4-10% of phosphorous oxide P2O5, with a BET surface area in the range 100-300 m2/g, a crushing strength CSH of more than 1.4 MPa, and an average pore diameter in the range 8-11 nm, the pore volume of pores with diameter of more than 14 nm being less than 0.08 ml/g, or less than 22% of total pore volume, the volume of pores with a diameter of less than 8 nm being at most 0.05 ml/g, or less than 10% of total pore volume, the volume of pores with diameter less than 10 nm being in the range of 20%-70%, the volume of pores with diameter between 10 nm and 13 nm being in the range of 20%-60%, and the volume of pores with a diameter which is in the range 8 to 14 nm being in the range 0.20 ml/g to 0.8 ml/g. The invention also concerns a hydrotreatment process using the catalyst, in particular hydrodesulphuration.

Abstract: A process for activation of a hydroconversion catalyst, whereby said catalyst contains at least one metal or element of group VIII, at least one acid element and optionally at least one metal or element of group VI according to which a light petroleum fraction, at least one thionic compound and at least one nitrogenous compound are injected in said catalyst. This process is carried out such that the QS sulfur amount that is injected before the temperature of the catalyst reaches 250° C. is at least equal to half the QSO sulfur amount that is necessary for complete sulfurization of the catalyst.

Abstract: An IM-5 zeolite that is modified by adding phosphorus that is optionally dealuminified, preferably in aluminosilicic form, and that contains at most 10% by weight of phosphorus, a composition that contains it, its processes for preparation and its application to catalytic cracking of hydrocarbon feedstocks are described.

Abstract: The invention concerns a process for purifying naphthalene. The process comprises selective hydrotreatment corresponding to hydrodesulphuration and/or hydrodenitrogenation and/or hydrodehydroxylation and/or hydrogenation of olefins while limiting naphthalene hydrogenation. The catalyst used comprises a matrix, at least one group VIII metal, at least one group VI metal and optionally phosphorous. It has a specific surface area of at most 220 m2/g, a pore volume of 0.35-0.7 ml/g and an average pore diameter of over 10 nm. The process is carried out at 150-325° C. at a pressure of 0.1-0.9 MPa, with an HSV of 0.05-10 h−1, and a H2/naphthalene ratio of 0.1-1.3 mole/mole. The effluent, freed of H2S, NH3 and water, undergoes a naphthalene separation process by distillation or, as is preferable, by crystallisation. Further, recycling the separated tetralin to the hydrotreatment step can substantially increase the naphthalene yield.

Abstract: The invention provides a catalyst including a support, at least one noble metal from group VIII of the periodic table, silicon as a dopant, optionally boron, optionally at least one group VIB element, optionally phosphorous and optionally at least one halogen. The invention also provides a particular preparation of the catalyst. The invention also concerns the use of this catalyst in the hydrotreatment of hydrocarbon-containing feeds, more particularly its use for hydrogenating aromatic compounds in a gas oil cut.

Abstract: The invention relates to a process for the sulfurization of hydroconversion catalysts, whereby said catalyst contains at least one element of group VIII of the periodic table and optionally an element of group VI, whereby said metal is present in the oxide state. Said process comprises at least one stage that is carried out in a hydrotreatment zone in the presence of at least one thionic compound and at least one nitrogenous compound. This process is carried out in such a way that before the final sulfurization temperature is reached, at least 130% of the stoichiometric amount of sulfur that is necessary for complete sulfurization of the catalyst is injected in said catalyst.

Abstract: The invention relates to a hydrocracking catalyst that contains at least one metal of group VIB, and/or at least one metal of group VIII of the periodic table, an alumina matrix, phosphorus, optionally at least one element from group VIIA (fluorine), and a zeolite Y that is not fully dealuminificated, with a crystalline parameter that is greater than 2,438 nm, an overall SiO2/Al2O3 ratio that is less than 8, and a framework SiO2/Al2O3 ratio that is less than 21 and greater than the overall SiO2/Al2O3 ratio. The invention also relates to a process for hydrocracking with this catalyst, in particular at low pressure of 7.5 to 11 MPa.

Abstract: The present invention concerns a hydrorefining and/or hydrocracking catalyst for hydrocarbon feeds, comprising at least one mixed sulphide comprising sulphur, at least one group VB element, preferably niobium, and at least one group VIB element, preferably molybdenum or tungsten, more preferably molybdenum, optionally combined with a support and/or at least one group VIIA metal and/or at least one group VIII metal and/or an element selected from the group formed by S, P, B, Si.

Abstract: A catalyst support comprising at least one matrix, at least one Y zeolite with a lattice parameter which is in the range 24.15 .ANG. to 24.38 .ANG. (1 nm=10 .ANG.) and at least one Y zeolite with a lattice parameter of more than 24.38 .ANG. and less than or equal to 24.51 .ANG.. The invention also concerns a catalyst comprising said support and at least one hydro-dehydrogenating element, and a conventional hydroconversion process for petroleum cuts using said catalyst.

Abstract: The invention concerns a hydrotreated catalyst comprising a support, at least one group VI metal, silicon, boron, optionally at least one metal from group VIII of the periodic table, optionally phosphorus, and optionally a halogen, also a particular preparation of this catalyst. The invention also concerns the use of the catalyst for hydrotreating hydrocarbon feeds.

Abstract: The invention concerns a catalyst comprising at least one catalytic element, and a support comprising 20-99% by weight of at least one matrix, 1-80% by weight of at least one 2:1 dioctahedral phyllosilicate containing fluorine and 0-30% by weight of at least one Y zeolite. The catalytic element is from groups VI and/or VIII. Phosphorous can be present. The invention also concerns a process for the hydroconversion of said catalyst.

Abstract: The invention concerns a process for the hydrogenation of aromatic compounds contained in feeds with an initial boiling point of more than 100.degree. C. and which contain at least 10% by weight of aromatic compounds. It consists of introducing chlorine in a concentration of 0.5-500 ppm by weight with respect to the feed at a temperature of between 200.degree. C. and 450.degree. C., a pressure in the range 1 MPa to 25 MPa, an HSV of between 0.1 h.sup.-1 and 10 h.sup.-1 and a volume ratio of hydrogen to feed of 100-2000. The catalyst used is a noble metal type and contains less than 1% of at least one halogen. Preferably, the catalyst is fluorinated or chlorinated.

Abstract: A catalyst comprising at least one catalytic element, and a support comprising 20-99% by weight of at least one matrix, 1-80% by weight of at least one 2:1 trioctahedral phyllosilicate containing fluorine and 0-30% by weight of at least one Y zeolite, in which the catalytic element is from groups VI and/or VIII, and phosphorous can be present, as well as a process for the hydroconversion of petroleum with said catalyst.