Abstract: A method for recovering reforming catalyst comprises obtaining spent reforming catalysts; immersing the spent reforming catalysts with different degrees of aging into a light solution to obtain immersed catalysts and allowing the light solution to enter pores in the spent reforming catalysts to lower a pseudo-skeletal density of each spent reforming catalyst to obtain immersed catalysts; immersing the immersed catalysts into a heavy solution that has a density greater than pseudo-skeletal density of the immersed catalysts and replacing the light solution in the pores in the immersed catalysts by the heavy solution to increase density of the immersed catalysts; and awaiting the immersed catalysts to settle in the heavy solution to obtain settled catalysts, wherein different settling velocities due to aging creates layers of settled catalysts. Therefore, the reforming catalysts with different degrees of aging are easily classified into different layers, which can be reused for cost saving.

Abstract: The invention provides a novel microorganism Pseudonocardia sp. RMRC PAH4 characterized in that it is able to degrade high concentration of quinoline by enrichment culture, shows a high tolerance to compactin-sodium and possesses a high hydroxylation activity of converting compactin-sodium to pravastatin-sodium. The invention relates also a process for converting compactin-sodium into pravastatin-sodium by fermenting said novel microorganism Pseudonocardia sp. RMRC PAH4. Pravastain-sodium is a potent cholesterol-lowering agent used in treatment for hypercholesterolemia.

Abstract: A robust, non-aqueous, and oil-soluble organic peroxide oxidant is employed for oxidative desulfurization and denitrogenation of hydrocarbon feedstocks including petroleum fuels. Even at low concentrations, the non-aqueous organic peroxide oxidant is extremely active and fast in oxidizing the sulfur and nitrogen compounds in the hydrocarbon feedstocks without catalyst. Consequently, the oxidation reactions that employ the non-aqueous organic peroxide oxidant take place at substantially lower temperatures and shorter residence times than reactions in other oxidative desulfurization and denitrogenation processes. As a result, a higher percentage of the valuable non-sulfur and non-nitrogen containing components in the hydrocarbon feedstock are more likely preserved with the inventive process. Desulfurization and denitrogenation occur in a single phase non-aqueous environment so that no phase transfer of the oxidant is required.

Abstract: In a process of forming a HA/ZrO2 complex coating on a Co—Cr—Mo alloy substrate, the substrate is subjected to electrolytic deposition respectively in a ZrO(NO3)2 bath and a mixed solution of Ca(NO3)2.4H2O and NH4H2PO4 to respectively form Zr(OH)4 colloidal layer and Ca10(PO4)6(OH)2 layer. Then, the substrate is subjected to a low-temperature sintering process to convert the two layers into a HA/ZrO2 complex coating.

Abstract: The invention provides a novel microorganism Pseudonocardia sp. RMRC PAH4 characterized in that it is able to degrade high concentration of quinoline by enrichment culture, shows a high tolerance to compactin-sodium and possesses a high hydroxylation activity of converting compactin-sodium to pravastatin-sodium. The invention relates also a process for converting compactin-sodium into pravastatin-sodium by fermenting said novel microorganism Pseudonocardia sp. RMRC PAH4. Pravastain-sodium is a potent cholesterol-lowering agent used in treatment for hypercholesterolemia.

Abstract: The present invention is provided a method of a high stability selectable hydrogenate catalyst producing and using for MCHD manufacturing. The present invention comprised a preparing procedure for Ru/Al2O3 catalyst including an activity raising procedure for said catalyst including and a DMCHD manufacturing process which said high stability catalyst is used for a selectable hydrogenating reaction.

Abstract: An improved process to prepare poly(oxyalkylene)amide for gasoline additives involves three consecutive reactions. The reactions are (1) amidation of water-soluble low molecular weight of polyalkylene polyamine with alkyl acetate at an elevated temperature under N2 pressure to convert amines to amides, (2) Butoxylation of the amides with 1,2-epoxybutane to prepare the poly(oxyalkylene) amides, and (3) selective hydrolysis of in situ poly(oxyalkylene)-amine-ester-amides into poly(oxyalkylene)-amine-alcohol-amides and removal of acetic acid byproducts, via acid/base hydrolysis and water extraction procedures. The process step of selective hydrolysis is essential for removal the harmful composition of poly(oxyalkylene)-amine-ester-amides in resulting the better performance of the additive, particularly the positive engine's octane requirement or reducing the combustion chamber deposits.

Abstract: A process for the production of white oil includes adding a supercritical fluid (propane, butane or carbon dioxide) to the base oil and hydrogen injected into a reactor for hydrogenation. The base oil and supercritical fluid use high-pressure injector pumps as the feed system. The feed system for hydrogen uses a high-pressure compressor to compress hydrogen from a hydrogen tank to a storage tank, then a mass flow controller is used to steadily feed the hydrogen. A static mixer mounted in line, upstream from the inlet of the reactor mixes the reactant well. Several thermocouples are connected to the reactor, inlet and outlet of said reactor to measure the temperatures of the reaction. The detected data from the thermocouples are transferred to a six-point thermograph. The pressure of the reaction is maintained by a back pressure regulator that is mounted downstream from the outlet of said reactor. After the hydrogenation reaction is complete, the pressure of the fluid in the outlet of the reactor is reduced.

Abstract: The present invention provides methods for preparing hydrothermally stable MCM-41 mesoporous molecular sieves incorporating aluminum and other transition metals. The materials prepared by these methods possess a very high surface area and narrow uniform pore distribution in the mesopore region, and are highly thermally stable whereby the ions are not leached out after high temperature annealing.

Abstract: The invention provides a fast-cured sol material, which is produced by hydrolysis and condensation of the following starting materials: 2-60 parts by weight of a silicon alkoxide; 20-98 parts by weight of an alcohol; 0.5-50 parts by weight of an aqueous media; 0.0001-10 parts by weight of a base; 0.001-30 parts by weight of at least one additive; and optionally 0.0001-10 parts by weight of an acid. A coating of the sol material according to the invention can be directly cured (without aging) to obtain a microporous dielectric film without shrinkage or cracks.

Abstract: A process for recovering cobalt and manganese components from a product stream or a residue stream that resulted from a process which employs a catalyst system containing the cobalt and manganese components for oxidizing pseudocumene to trimellitic acid includes the steps of adding a precipitating agent to the product stream or the residue stream in an effective amount to react with the cobalt and manganese components in the product stream or the residue stream.

Abstract: The present invention relates to a novel antifoulant which is prepared by the Mannich reaction of phenolic compounds, formaldehyde, and amine compounds.

Abstract: A new class of useful gasoline additives is prepared via two consecutive reactions including: (1) amidation of water-soluble hydrophilic, low molecular weight triamine with alkyl acetate at an elevated temperature under N2 pressure to prepare a symmetrical triamide; and (2) alkoxylation of the triamides with 1,2-epoxyalkane to prepare poly(oxyalkylene)triamide alkoxylate of three telechelic hydroxy groups, having the general formula: wherein x, y and z are from 1 to 20, R is poly(oxyalkylene) of a molecular weight from 72 to 1000, and R′ is an alkyl having a carbon number from 2 to 18.

Abstract: A metallocene complex in which the cyclopentadienyl group is substituted with an alkanediyl silyl group. The yield of the metallocene complex is high, and it can be used as the catalyst for preparing high molecular weight olefin polymers.

Abstract: An apparatus for producing hydrogen includes at least one reforming chamber containing a reforming catalyst bed for reforming a carbonaceous fuel into hydrogen, at least one hydrogen-permeable membrane tube disposed inside the reforming chamber to be surrounded by the reforming catalyst bed and to confine therein a hydrogen compartment, and at least one oxidation chamber provided adjacent to the reforming catalyst bed for burning the gas not permeable to the membrane tube and for supplying heat to the reforming chamber. The oxidation chamber has an oxidation catalyst bed. A process for producing hydrogen via the apparatus is also disclosed.

Abstract: A novel uretedione derivative used as a curing agent for aqueous-based polyurethane and a process for producing the same are disclosed. The uretedione derivative contains uretedione and aziridine functional groups which are active toward the amino and the carboxy groups of hydrolyzed polyurethane in an aqueous phase.

Abstract: A catalyst suitable for partially hydrogenating aromatic olefins to cyclohexene is disclosed. The catalyst is composed on a metallic active component deposited on a bi-oxide of gallium oxide-zinc oxide, and the metallic active component is selected from group VIII of the period table. The characteristic of the catalyst comprises a higher selectivity and yield in preparing cyclohexene.

Abstract: The present invention provides a polishing composition which comprises 100 weight part of water; 0.5 to 20 weight part of boehmite, a hydroxide of aluminum, pseudoboehmite or mixtures thereof; 1 to 50 weight part of aluminum oxide (Al.sub.2 O.sub.3); and 1 to 20 weight part of an acidic solution. The polishing composition of the present invention is a thixotropic fluid and displays satisfactory suspension properties. Therefore, it is very suitable for use as a polishing slurry.

Abstract: The present invention relates to a novel fullerene-derived metallocene. Such fullerene-derived metallocene can be used as the catalyst for preparing olefin polymers.

Abstract: The present invention relates to a novel fullerene-containing metallocene. Such a fullerene-containing metallocene can be used as the catalyst for preparing olefin polymers.