The present invention relates to the use, in a method for in-situ activation of at least one hydrotreating, in particular hydrocracking, catalyst, of at least one nitrogen compound having at least one of the following characteristics: a) a nitrogen content by weight in the range from 15 to 35 wt %, relative to the total weight of the nitrogen compound; b) a number of nitrogen atoms in the range from 2 to 20; c) a boiling point in the range from 140 C. to 300 C.; and d) said nitrogen compound being in liquid form at room temperature and atmospheric pressure.

The present invention also relates to the method for in-situ activation of at least one hydrotreating catalyst comprising at least one step of sulphiding said hydrotreating catalyst in the presence of a sulphiding agent, and a step of passivation of said hydrotreating catalyst in the presence of said at least one nitrogen compound.

A heterogeneous catalyst article having at least one combination of a first molecular sieve having a medium pore, large pore, or meso-pore crystal structure and optionally containing a first metal, and a second molecular sieve having a small pore crystal structure and optionally containing a second metal, and a monolith substrate onto or within which said catalytic component is incorporated, wherein the combination of the first and second molecular sieves is a blend, a plurality of layers, and/or a plurality of zones.

A catalyst for the carbonylation of dimethyl ether to methyl acetate. The catalyst comprises a zeolite, such as a mordenite zeolite, at least one Group IB metal, such as copper, and/or at least one Group VIII metal, such as iron, and at least one Group IIB metal, such as zinc. Such a catalyst with combined metals provides enhanced catalytic activity, improved stability, and improved selectivity to methyl acetate, and does not require a halogen promoter, as compared to a metal-free or copper only zeolite.

Disclosed herein is a method for producing a zeolite, zeolite-like or zeotype structure with selective formation of metal, metal oxide or metal sulphide nanoparticles and/or clusters inside the zeolite, zeolite-like or zeotype structure.

A catalyst structure for synthesis gas production is used to produce a synthesis gas that includes carbon monoxide and hydrogen. The structure includes a carrier with a porous structure that comprises a zeolite-type compound; first catalyst particles that contain at least one iron-group element selected from the group consisting of nickel, iron, and cobalt; and a second catalyst that contains at least one transition metal element with redox capacity. The carrier includes, inside thereof, mutually communicating passages; the first catalyst particles are present at least in the passages of the carrier; and the second catalyst is present at least in the interior or on an outer surface of the carrier.

In one aspect, the disclosure relates to a method for depolymerizing plastics using radio frequency (RF) induction heating. The method can be conducted at low temperatures and does not require the addition of H.sub.2 or solvents. In one aspect, the method is tunable to produce commercially valuable C.sub.2-C.sub.20 compounds including, but not limited to, alkenes, cycloalkanes, cycloalkenes, hydrocarbon lubricants, and polymerizable monomers. In another aspect, the method can depolymerize both virgin plastics and recycled plastic materials. In still another aspect, catalysts useful in the disclosed method are resistant to coking and poisoning.