The present invention relates generally to methods for producing detergent compounds from waste plastic feedstocks. More specifically, the invention relates to methods for producing detergent intermediates, including alkylbenzenes, paraffins, olefins, oxo alcohols, and surfactant derivatives thereof from waste plastic feedstock.

Disclosed are processes for rejuvenating catalysts comprising at least one Group 10 metal and a microporous crystalline metallosilicate, and hydrocarbon conversion processes including such rejuvenation processes. In an aspect, the rejuvenation process comprises contacting a deactivated catalyst comprising at least one Group 10 metal and a microporous crystalline metallosilicate with an oxygen-containing gaseous stream under conditions comprising a temperature ranging from about 250° C. to about 375° C. and a pressure of up to about 100 bar. In a further aspect, the rejuvenation process comprises contacting a deactivated catalyst comprising at least one Group 10 metal, at least one rare earth metal, and a microporous crystalline metallosilicate with an oxygen-containing gaseous stream under conditions comprising a temperature ranging from about 250° C. to about 500° C. and a pressure of up to about 100 bar.

A molybdenum-vanadium bimetal oxide catalyst having a molecular formula of Mo.sub.1V.sub.y, where y represents an atomic molar ratio of vanadium and molybdenum. An oxygen support Mo.sub.1V.sub.y is prepared by an impregnation method including impregnation, drying, calcination, and tablet pressing. In the dehydrogenation reaction of a light alkane to an alkene over the supported molybdenum-vanadium bimetal oxide, the reaction temperature is 450° C.-550° C. Propane can be oxidized and dehydrogenated to produce propylene with a high activity and high selectivity. A conversion rate of propane remains at 30%-40%, and a selectivity for propylene is 80%-90%. A fresh oxygen support changes from a high-valence state to a low-valence state after reacting with propane. A low-valence state oxygen support reacts with air or oxygen to be oxidized to a high-valence state, and recovers lattice oxygen and cycles again.

A catalyst comprising Y.sub.2O.sub.3 nanorods and gold nanoparticles dispersed on a surface of the nanorods is provided. The gold is present at a concentration of 0.5-2 wt %. A method of forming olefins by oxidative cracking is also provided. The method includes reacting an alkane with a reactant gas mixture in the presence of a catalyst under conditions suitable for forming light olefins (ethtylene and propylene).

Systems and processes for upgrading natural gas liquids (NGL). A natural gas, preferably a shale gas, comprising methane and one or more natural gas liquids can be converted to one or more liquid hydrocarbons. Methane can be separated from the one or more liquid hydrocarbons using a liquid absorbent to provide a first separated stream comprising the methane from the converted stream and a second separated stream comprising the one or more liquid hydrocarbons from the converted stream. At least a portion of the one or more liquid hydrocarbons can be recycled as the liquid absorbent.

Systems and processes for upgrading natural gas liquids (NGL). A natural gas, preferably a shale gas, comprising methane and one or more natural gas liquids can be converted to one or more liquid hydrocarbons. Methane can be separated from the one or more liquid hydrocarbons using a liquid absorbent to provide a first separated stream comprising the methane from the converted stream and a second separated stream comprising the one or more liquid hydrocarbons from the converted stream. At least a portion of the one or more liquid hydrocarbons can be recycled as the liquid absorbent.

The invention relates to the use of a supported, platinum-containing and sulfur-containing shell catalyst for the partial or complete dehydrogenation of perhydrogenated or partially hydrogenated cyclic hydrocarbons. The present invention also relates to a method for producing a platinum-containing and sulfur-containing shell catalyst and to a platinum-containing and sulfur-containing shell catalyst. The present invention further relates to a method for the partial or complete dehydrogenation of perhydrogenated or partially hydrogenated cyclic hydrocarbons.

The present invention relates to a dehydrogenation catalyst in which a platinum-group metal, an assistant metal, and an alkali metal or alkaline earth metal component are supported on a carrier, wherein the molar ratio of platinum to the assistant metal is 0.5 to 1.49, and the catalyst has an acidity amount of 20 to 150 mol KOH/g catalyst when it is titrated with KOH. The dehydrogenation catalyst according to the present invention may prevent coke formation from increasing rapidly when the hydrogen/hydrocarbon ratio in a dehydrogenation reaction is reduced, thereby increasing the productivity of the process. Accordingly, it makes it possible to operate the process under a condition in which the hydrogen/hydrocarbon ratio in a dehydrogenation reaction is reduced, thereby improving the economy of the process.

A catalyst for dehydrogenation of hydrocarbons includes a support including zirconium oxide and alumina. A concentration of the zirconium oxide in the catalyst is in a range of from 1 weight percent (wt. %) to 20 wt. %. The catalyst includes from 0.01 wt. % to 2 wt. % of an alkali metal or alkaline earth metal. The catalyst includes from 1 wt. % to 2 wt. % of tin. The catalyst includes from 0.1 wt. % to 2 wt. % of a platinum group metal. The alkali metal or alkaline earth metal, tin, and platinum group metal are disposed on the support.

A catalyst for dehydrogenation of hydrocarbons includes a support including zirconium oxide and Linde type L zeolite (L-zeolite). A concentration of the zirconium oxide in the catalyst is in a range of from 0.1 weight percent (wt. %) to 20 wt. %. The catalyst includes from 5 wt. % to 15 wt. % of an alkali metal or alkaline earth metal. The catalyst includes from 0.1 wt. % to 10 wt. % of tin. The catalyst includes from 0.1 wt. % to 8 wt. % of a platinum group metal. The alkali metal or alkaline earth metal, tin, and platinum group metal are disposed on the support.