Abstract: A process to make isoprene may include providing a reaction zone containing an acidic aqueous solution. The process may include introducing, continuously or intermittently, in the reaction zone a mixture containing isobutanol and an aqueous solution of formaldehyde. The process may include operating the reaction zone at conditions effective to dehydrate isobutanol to iso-butene, and produce isoprene by reaction of formaldehyde and iso-butene, while distilling away a mixture containing produced isoprene and water.

Abstract: A process to make isoprene may include providing a reaction zone containing an acidic aqueous solution. The process may include introducing, continuously or intermittently, in the reaction zone a mixture containing isobutanol and an aqueous solution of formaldehyde. The process may include operating the reaction zone at conditions effective to dehydrate isobutanol to iso-butene, and produce isoprene by reaction of formaldehyde and iso-butene, while distilling away a mixture containing produced isoprene and water.

Abstract: A process for preparing alkyl tert alkyl ethers includes the steps of providing a liquid olefinic hydrocarbon feedstock having a sulfur content, providing an ion exchange resin containing an amount of palladium selected based upon the sulfur content of the liquid olefinic hydrocarbon feedstock, mixing the liquid olefinic hydrocarbon feedstock with alcohol and hydrogen so as to obtain a reaction feedstock and treating the reaction feedstock with the ion exchange resin under etherification conditions so as to obtain an alkyl tert alkyl ether.

Abstract: A process for the production of an ether-rich additive for gasoline, and more particularly, the production of MTBE, TAME and mixtures thereof from light hydrocarbon streams comprising passing the light hydrocarbon stream, preferably from an FCC feedstock, through a superactivated porous particulate medium so as to remove nitrogen compounds, mercaptan and water prior to contacting the feedstock with a catalyst under etherification process conditions. The present invention further includes a process for regenerating the spent superactivated mediums used for purifying the feedstock employed in the process for the production of ether-rich additives for gasoline.

Abstract: A process for treating alumina mediums used for purifying a hydrocarbon feedstock employed in a process for the production of ether-rich additives for gasoline.

Abstract: A process for the production of an ether-rich additive for gasoline, and more particularly, the production of TAME from light hydrocarbon streams by admixing the light hydrocarbon stream, preferably from an FCC feedstock, prior to distillation of the feedstock with an alcohol in a C.sub.5 feedstock and contacting the feedstock with a catalyst under etherification process conditions.

Abstract: A process for the production of an ether-rich additive for gasoline, and more particularly, the production of MTBE, TAME and mixtures thereof from light hydrocarbon streams comprising passing the light hydrocarbon stream, preferably from an FCC feedstock, through a superactivated alumina medium so as to remove nitrogen compounds, mercaptan and water prior to contacting the feedstock with a catalyst under etherification process conditions. The present invention further includes a process for regenerating the spent superactivated alumina mediums used for purifying the feedstock employed in the process for the production of ether-rich additives for gasoline.