초록 ▼

The invention concerns a catalyst comprising: (a) a carrier containing at least 20% by weight of a fluorinated bridged clay of the smectite group, (b) an amorphous matrix containing at least 10% by weight of alumina, and (c) at least one group VIII metal or metal compound or an association of at lea

The invention concerns a catalyst comprising: (a) a carrier containing at least 20% by weight of a fluorinated bridged clay of the smectite group, (b) an amorphous matrix containing at least 10% by weight of alumina, and (c) at least one group VIII metal or metal compound or an association of at least one group VI B metal or metal compound with at least one metal or compound of a metal selected from group VIII non-noble metal. The metals amount, calculated as oxide(s), in proportion to the final catalyst weight, is from 0.01 to 5% for the group VIII noble metals, from 0.01 to 20% for group VIII non-noble metals and from 5 to 40% for the association of group VI B metals with group VII non-noble metals. The carrier amount is such that the florinated bridged clay content of the final catalyst is at least 12% by weight; the matrix amount forms the complement to 100% by weight of the catalyst.

대표청구항 ▼

A catalyst containing (a) a carrier, (b) an amorphous matrix and (c) at least one group VIII metal or compound of a group VIII metal or an association comprising a group VI B metal or metal compound and at least one non-noble group VIII metal or metal compound, wherein in said catalyst: the carrier

A catalyst containing (a) a carrier, (b) an amorphous matrix and (c) at least one group VIII metal or compound of a group VIII metal or an association comprising a group VI B metal or metal compound and at least one non-noble group VIII metal or metal compound, wherein in said catalyst: the carrier contains at least 20% by weight of a fluorinated bridged smectite clay, the amorphous matrix contains at least 10% by weight of alumina, the concentration of group VIII metal or metals expressed as oxide(s) thereof, with respect to the final catalyst, ranges from 0.01 to 5% by weight for group VIII noble metals and from 0.01 to 20% by weight for group VIII non-noble metals; or, the total concentration of groups VIII and VI B metals ranges from 5 to 40% by weight for the association of at least one group VIII non-noble metal with at least one group VI B metal, the carrier amount is sufficient to obtain a content of fluorinated bridged clay of at least 12% by weight of the final catalyst, the matrix amount corresponds to the amount necessary to total 100% by weight of the final catalyst in combination with (a) and (c) above. A catalyst according to claim 2, wherein the mixture consists essentially of 5-50% of non fluorinated bridged clay and 50-95% of fluorinated bridged clay by weight.