The invention relates to a process for the rejuvenation of an at least partially spent catalyst resulting from a hydrotreating process, said at least partially spent catalyst resulting from a fresh catalyst comprising a metal from group VIII, a metal from group VIb, an oxide support, and optionally phosphorus, said at least partially spent catalyst additionally comprising carbon in a content of between 2% and 20% by weight, with respect to the total weight of the at least partially spent catalyst, and sulfur in a content of between 1% and 8% by weight, with respect to the total weight of the at least partially spent catalyst, said process comprising the following stages: a) said spent catalyst is brought into contact with an impregnation solution containing a compound comprising a metal from group VIb, b) a drying stage is carried out at a temperature of less than 200 C.

The invention relates to a process for rejuvenating an at least partially spent hydrotreating and/or hydrocracking catalyst, said catalyst comprising a group VIII metal, a group VIB metal and an oxide support, said process comprising the following steps: a) the catalyst is regenerated, b) said regenerated catalyst is then brought into contact with an impregnation solution consisting of a mixture of water, at least one precursor of a group VIB metal, at least one precursor of a group VIII metal and at least one organic compound, the amount of organic compound introduced into the regenerated catalyst being optimized with respect to the metals already present in the regenerated catalyst and with respect to the amount of metals introduced via the impregnation solution, c) a drying step is then carried out without subsequently calcining it.

Compositions and methods for preparing and using ceramic mixed ionic-electronic conductor (MIEC) enhanced transition metals and metal oxides in composite or core-shell forms are disclosed. The presently disclosed compositions are stable at high temperatures and can carry as much as about 20 weight % oxygen.

Compositions and methods for preparing and using ceramic mixed ionic-electronic conductor (MIEC) enhanced transition metals and metal oxides in composite or core-shell forms are disclosed. The presently disclosed compositions are stable at high temperatures and can carry as much as about 20 weight % oxygen.

The present disclosure relates to a catalytic reactor for cracking wax of pyrolysis oil generated from waste plastic pyrolysis emulsification process, a catalytic composition and a production method thereof. Particularly, the present disclosure relates to a catalytic composition for cracking wax, including: a support that includes zeolite containing silicon oxide and aluminum oxide, and silica; and an active metal that includes iron and zinc, and is immersed in the support, thereby cracking carbides with C14 or more included in wax of pyrolysis oil generated during waste plastic emulsification process.

The present disclosure relates to a catalytic reactor for cracking wax of pyrolysis oil generated from waste plastic pyrolysis emulsification process, a catalytic composition and a production method thereof. Particularly, the present disclosure relates to a catalytic composition for cracking wax, including: a support that includes zeolite containing silicon oxide and aluminum oxide, and silica; and an active metal that includes iron and zinc, and is immersed in the support, thereby cracking carbides with C14 or more included in wax of pyrolysis oil generated during waste plastic emulsification process.

Described is an industrial scale chemical reactor or reactor containing a shell having an inner wall, and at least one channel inside the shell. The shell has a circular, square, or rectangular cross-sectional area. All of the internal dimensions of the channel are greater than 10 mm, and optionally less than 50 mm. The channel has a rectangular cross-sectional area, and contains a catalyst bed containing catalyst particles and/or pieces containing catalyst particles packed inside the channel. The reactor has improved shell volume utilization, catalyst loading capacities, heat exchange efficiency, process intensification, or combinations thereof, compared to currently existing reactors. Exothermic reactions, such as the Fischer-Tropsch synthesis can be performed inside the channels of the reactor. Also described are methods of making the reactor.

Described is an industrial scale chemical reactor or reactor containing a shell having an inner wall, and at least one channel inside the shell. The shell has a circular, square, or rectangular cross-sectional area. All of the internal dimensions of the channel are greater than 10 mm, and optionally less than 50 mm. The channel has a rectangular cross-sectional area, and contains a catalyst bed containing catalyst particles and/or pieces containing catalyst particles packed inside the channel. The reactor has improved shell volume utilization, catalyst loading capacities, heat exchange efficiency, process intensification, or combinations thereof, compared to currently existing reactors. Exothermic reactions, such as the Fischer-Tropsch synthesis can be performed inside the channels of the reactor. Also described are methods of making the reactor.

Methods, systems, and compositions related to the recycling and/or recovery of activating materials from activated aluminum are disclosed. In one embodiment, an aqueous solution's composition may be controlled to maintain aluminum ions dissolved in solution during reaction of an activated aluminum. In another embodiment, aluminum hydroxide containing the activating materials may be dissolved into an aqueous solution to isolate the activating materials.

Methods, systems, and compositions related to the recycling and/or recovery of activating materials from activated aluminum are disclosed. In one embodiment, an aqueous solution's composition may be controlled to maintain aluminum ions dissolved in solution during reaction of an activated aluminum. In another embodiment, aluminum hydroxide containing the activating materials may be dissolved into an aqueous solution to isolate the activating materials.