Disclosed is a process for the conversion of acyclic C.sub.5 feedstock to a product comprising cyclic C.sub.5 compounds, including cyclopentadiene, and formulated catalyst compositions for use in such process. The process comprises contacting the feedstock and, optionally, hydrogen under acyclic C.sub.5 conversion conditions in the presence of a catalyst composition to form the product. The catalyst composition comprises a microporous crystalline metallosilicate, a Group 10 metal or compound thereof, a binder, optionally, a metal selected from the group consisting of rare earth metals, metals of Groups 8, 9, or 11, mixtures or combinations thereof, or a compound thereof, in combination with a Group 1 alkali metal or a compound thereof and/or a Group 2 alkaline earth metal or a compound thereof.

A catalytic composition is built up from a ceramic material including a catalytic material and a first inorganic binder and a second inorganic binder and a catalytic structure made thereof. Preferably, the structure is made by a colloidal ceramic shaping technique. The structure is usable for catalytic or ion exchange applications as well. It is demonstrated that the catalytic structures have excellent mechanical, physicochemical and catalytic properties.

A method for chemically reducing carbon dioxide (CO.sub.2) with a red mud catalyst composition is provided includes introducing a gaseous mixture of CO.sub.2 and H.sub.2 into a reactor containing particles of the red mud catalyst composition. The method further includes reacting at least a portion of the CO.sub.2 and H.sub.2 in the gaseous mixture in the presence of the red mud catalyst composition at a temperature of 200 to 800? C., and under a pressure ranging from 5 to 100 bar to form a gaseous product including a chemical reduction product of the CO.sub.2. A volume ratio of the CO.sub.2 to the H.sub.2 in the gaseous mixture is in a range of 1:10 to 10:1.

A method for chemically reducing carbon dioxide (CO.sub.2) with a red mud catalyst composition is provided includes introducing a gaseous mixture of CO.sub.2 and H.sub.2 into a reactor containing particles of the red mud catalyst composition. The method further includes reacting at least a portion of the CO.sub.2 and H.sub.2 in the gaseous mixture in the presence of the red mud catalyst composition at a temperature of 200 to 800? C., and under a pressure ranging from 5 to 100 bar to form a gaseous product including a chemical reduction product of the CO.sub.2. A volume ratio of the CO.sub.2 to the H.sub.2 in the gaseous mixture is in a range of 1:10 to 10:1.

A method for forming an olefin, the method including: introducing a hydrocarbon feed stream into a reactor including a dehydrogenation catalyst; reacting the hydrocarbon feed stream with a dehydrogenation catalyst in the reactor to form a high temperature dehydrogenated product, the high temperature dehydrogenated product including at least a portion of the dehydrogenation catalyst; separating at least a portion of the dehydrogenation catalyst from the high temperature dehydrogenated product in a primary separation device and a secondary separation device downstream of and in fluid communication with the primary separation device; following the exit of high temperature dehydrogenation product from the secondary separation device, combining the high temperature dehydrogenation product with a quench stream to cool the high temperature dehydrogenation product and form an intermediate temperature dehydrogenation product, wherein the quench stream includes a hydrocarbon; and cooling the intermediate temperature dehydrogenation product to form a cooled dehydrogenation product.

A method for chemically reducing carbon dioxide (CO.sub.2) with a red mud catalyst composition is provided includes introducing a gaseous mixture of CO.sub.2 and H.sub.2 into a reactor containing particles of the red mud catalyst composition. The method further includes reacting at least a portion of the CO.sub.2 and H.sub.2 in the gaseous mixture in the presence of the red mud catalyst composition at a temperature of 200 to 800? C., and under a pressure ranging from 5 to 100 bar to form a gaseous product including a chemical reduction product of the CO.sub.2. A volume ratio of the CO.sub.2 to the H.sub.2 in the gaseous mixture is in a range of 1:10 to 10:1.

A method for chemically reducing carbon dioxide (CO.sub.2) with a red mud catalyst composition is provided includes introducing a gaseous mixture of CO.sub.2 and H.sub.2 into a reactor containing particles of the red mud catalyst composition. The method further includes reacting at least a portion of the CO.sub.2 and H.sub.2 in the gaseous mixture in the presence of the red mud catalyst composition at a temperature of 200 to 800?? C., and under a pressure ranging from 5 to 100 bar to form a gaseous product including a chemical reduction product of the CO.sub.2. A volume ratio of the CO.sub.2 to the H.sub.2 in the gaseous mixture is in a range of 1:10 to 10:1.

A method for chemically reducing carbon dioxide (CO.sub.2) with a red mud catalyst composition is provided includes introducing a gaseous mixture of CO.sub.2 and H.sub.2 into a reactor containing particles of the red mud catalyst composition. The method further includes reacting at least a portion of the CO.sub.2 and H.sub.2 in the gaseous mixture in the presence of the red mud catalyst composition at a temperature of 200 to 800? C., and under a pressure ranging from 5 to 100 bar to form a gaseous product including a chemical reduction product of the CO.sub.2. A volume ratio of the CO.sub.2 to the H.sub.2 in the gaseous mixture is in a range of 1:10 to 10:1.

A method for chemically reducing carbon dioxide (CO.sub.2) with a red mud catalyst composition is provided includes introducing a gaseous mixture of CO.sub.2 and H.sub.2 into a reactor containing particles of the red mud catalyst composition. The method further includes reacting at least a portion of the CO.sub.2 and H.sub.2 in the gaseous mixture in the presence of the red mud catalyst composition at a temperature of 200 to 800? ? C., and under a pressure ranging from 5 to 100 bar to form a gaseous product including a chemical reduction product of the CO.sub.2. A volume ratio of the CO.sub.2 to the H.sub.2 in the gaseous mixture is in a range of 1:10 to 10:1.

The invention relates to a process for producing alkylated aromatic hydrocarbons comprising the steps of: (a) subjecting a mixed hydrocarbon feedstream comprising benzene to a separation to provide a C6 cut comprising benzene, wherein the C6 cut comprises at least 60 wt-% of C6 hydrocarbons; (b) subjecting the C6 cut to catalytic cracking or thermal cracking to provide a cracking product stream comprising benzene and C2-C4 alkenes and (c) after step (b), without pre-separation of the cracking product stream, subjecting the cracking product stream to conditions suitable for alkylation to provide an alkylation product stream rich in alkylated aromatic hydrocarbons, wherein the process further comprises the steps of separating benzene and benzene coboilers from the alkylation product stream to obtain a stream of benzene and benzene coboilers and wherein the stream of benzene and benzene coboilers is separated into a benzene-rich stream comprising a higher proportion of benzene than the stream of benzene and benzene coboilers and a benzene-lean stream comprising a lower proportion of benzene than the stream of benzene and benzene coboilers and wherein the benzene-lean stream is recycled back to the catalytic cracking or thermal cracking in step (b).