The present disclosure provides a porous polymeric membrane that is coated with a cross-linked polymerized monomer. The coating on the porous polymeric membrane has a charge when it is immersed in an organic liquid. The coated porous polymeric membrane, a filter utilizing the membrane, and a method for treating an organic liquid used for photoresist with the coated porous polymeric membrane to remove metal contaminants from the organic liquid are disclosed.

The present disclosure provides a porous polymeric membrane that is coated with a cross-linked polymerized monomer. The coating on the porous polymeric membrane has a charge when it is immersed in an organic liquid. The coated porous polymeric membrane, a filter utilizing the membrane, and a method for treating an organic liquid used for photoresist with the coated porous polymeric membrane to remove metal contaminants from the organic liquid are disclosed.

A process can be used for preparing aldehydes from C2 to C20 olefins with a subsequent thermal separation for removal of the aldehyde formed. The process involves a membrane separation, which is preceded by performance of a gas exchange by which the proportion of the partial pressure represented by carbon monoxide or hydrogen is increased in order to reduce catalyst losses.

A process can be used for preparing aldehydes from C2 to C20 olefins with a subsequent thermal separation for removal of the aldehyde formed. The process involves a membrane separation, which is preceded by performance of a gas exchange by which the proportion of the partial pressure represented by carbon monoxide or hydrogen is increased in order to reduce catalyst losses.

The disclosure relates to a device for fermentation integrated with separation and purification of acetone, butanol, and ethanol (ABE) or butanol alone, including a medium tank (1), used for supplying a medium into a bioreactor; a bioreactor (2), connected with the medium tank (1), used for fermentation; a gas distributor (9), used for supplying gas bubble to the fermentation broth; a membrane separation unit (4), with gas communication to the bioreactor (2), used for receiving a gas with ABE or butanol from the bioreactor and separating ABE or butanol; a condensation unit (5), used for recovering ABE or butanol; a vacuum manometer (6) and a vacuum pump (8), used for supplying a force for driving ABE or butanol in a vapor form; and product tank (7), used for receiving a product.

The disclosure relates to a device for fermentation integrated with separation and purification of acetone, butanol, and ethanol (ABE) or butanol alone, including a medium tank (1), used for supplying a medium into a bioreactor; a bioreactor (2), connected with the medium tank (1), used for fermentation; a gas distributor (9), used for supplying gas bubble to the fermentation broth; a membrane separation unit (4), with gas communication to the bioreactor (2), used for receiving a gas with ABE or butanol from the bioreactor and separating ABE or butanol; a condensation unit (5), used for recovering ABE or butanol; a vacuum manometer (6) and a vacuum pump (8), used for supplying a force for driving ABE or butanol in a vapor form; and product tank (7), used for receiving a product.

A process for preparing aldehydes by a homogeneously catalyzed hydroformylation of C.sub.4 to C.sub.20 olefins involves withdrawing a biphasic stream (liquid/gaseous) and expanding in two stages. Before, between, or after the two stages, the liquid phase is cooled. Only after expansion and cooling is the homogeneously dissolved rhodium catalyst system separated from the residual stream in a three-stage removal.

A process for preparing aldehydes by a homogeneously catalyzed hydroformylation of C.sub.4 to C.sub.20 olefins involves withdrawing a biphasic stream (liquid/gaseous) and expanding in two stages. Before, between, or after the two stages, the liquid phase is cooled. Only after expansion and cooling is the homogeneously dissolved rhodium catalyst system separated from the residual stream in a three-stage removal.

A process and a preparation plant prepares methacrolein from formaldehyde and propionaldehyde, in presence of water and a homogeneous catalyst based at least on an acid and a base. A reaction mixture is introduced into a methacrolein workup plant and separated in a first distillation column, into a first distillation mixture in a gas phase at the top and a second distillation mixture in a liquid phase at the bottom. The first distillation mixture is condensed and, in a first phase separator, the organic phase and the aqueous phase of the condensate are separated from one another. The aqueous phase is introduced into a second distillation column, that is not part of the methacrolein workup plant, and is separated into a third distillation mixture in a gas phase at the top and a fourth distillation mixture at the bottom. The third distillation mixture is introduced into the methacrolein workup plant.

A process and a preparation plant prepares methacrolein from formaldehyde and propionaldehyde, in presence of water and a homogeneous catalyst based at least on an acid and a base. A reaction mixture is introduced into a methacrolein workup plant and separated in a first distillation column, into a first distillation mixture in a gas phase at the top and a second distillation mixture in a liquid phase at the bottom. The first distillation mixture is condensed and, in a first phase separator, the organic phase and the aqueous phase of the condensate are separated from one another. The aqueous phase is introduced into a second distillation column, that is not part of the methacrolein workup plant, and is separated into a third distillation mixture in a gas phase at the top and a fourth distillation mixture at the bottom. The third distillation mixture is introduced into the methacrolein workup plant.