摘要:
The present invention relates to a composite body in which first metal-containing particles and second metal-containing particles are supported on a carbon material or connected by a carbon material, and a method for producing the same. The above composite body can, if the first metal-containing particles exhibit a catalytic activity, be applied as a reaction catalyst and can also be used in various fields such as the manufacture of the adsorbent or the separation membrane.
摘要:
The invention relates to a process for producing hydrocarbons from carbon dioxide and hydrogen, wherein carbon dioxide is converted with hydrogen in the presence of a special catalyst. By means of the process according to the invention C5-C15 hydrocarbons which are of interest as fuels (benzine, diesel, kerosene) can be formed with very high selectivity. Furthermore, in the process C2-C4 hydrocarbons, which can be used as valuable starting materials in the chemical industry, are produced with good selectivity. In the process a high conversion of CO2 is already achieved without any recirculation of excess carbon dioxide. According to another aspect, the invention relates to the catalysts as such.
摘要:
Metal oxide catalysts comprising various dopants are provided. The catalysts are useful as heterogenous catalysts in a variety of catalytic reactions, for example, the oxidative coupling of methane to C2 hydrocarbons such as ethane and ethylene. Related methods for use and manufacture of the same are also disclosed.
摘要:
A process for producing an olefin oxide which comprises reacting an olefin with oxygen in the presence of a catalyst comprising a copper oxide and a tellurium oxide.
摘要:
Process for preparing one or more complexing agents selected from methylglycinediacetic acid, glutamic acid diacetic acid and salts thereofProcess for preparing one or more complexing agents selected from methylglycinediacetic acid, glutamic acid diacetic acid and salts thereof by catalytic dehydrogenation of N,N-bis(2-hydroxyethyl)alanine and/or N,N-bis(2-hydroxyethyl)glutamic acid and/or salts thereof in the presence of alkali metal hydroxide, where a catalyst comprising copper and zirconium dioxide is used, the activation of which is a reduction, wherein the precursor of the catalyst in question has a degree of crystallization K, defined as K = I K · 100 I K + I A , in the range from 0 to 50%.
摘要:
A copper catalyst for producing ethylene glycol by hydrogenation of an oxalate. The catalyst includes a carrier, an additive, and an active component. The carrier is ceramic or metallic honeycomb. The additive is Al, Si, Ba, Ca, Ti, Zr, Fe, Zn, Mn, V, La, Ce, an oxide thereof, or a mixture thereof. The active component is copper, and the active component and the additive are coated on the carrier to form a coating layer. The additive accounts for 5-90 wt. % of the carrier, the active component accounts for 1-40 wt. % of the carrier, and the copper accounts for 5-50 wt. % of the coating layer.
摘要:
The present invention provides for nanostructures grown on a conducting or insulating substrate, and a method of making the same. The nanostructures grown according to the claimed method are suitable for interconnects and/or as heat dissipators in electronic devices.
摘要:
A device for reducing the emission of polychlorinated dibenzodioxins (PCDD) and polychlorinated dibenzofurans (PCDF) from transition metal-containing catalyzers for selective catalytic reduction of nitric oxides in the exhaust gas of an internal combustion engine by means of ammonia and/or reducing agents which split off ammonia. At least one catalyzer for oxidizing hydrocarbon-containing PCDD precursor substances and PCDF is arranged upstream of the at least one transition metal-containing SCR catalyzer and/or at least one catalyzer for degrading precursor substances for degrading the polychlorinated dibenzodioxins and/or polychlorinated dibenzofurans is arranged downstream of the at least one transition metal-containing catalyzer. The at least one catalyzer for degrading PCDD and PCDF and/or the at least one catalyzer for oxidizing hydrocarbon-containing precursor substances thereof are/is additionally active for the reduction of nitric oxides by means of ammonia.
摘要:
The present invention provides for nanostructures grown on a conducting or insulating substrate, and a method of making the same. The nanostructures grown according to the claimed method are suitable for interconnects and/or as heat dissipators in electronic devices.
摘要:
Catalysts and methods for alkane oxydehydrogenation are disclosed. The catalysts of the invention generally comprise (i) nickel or a nickel-containing compound and (ii) at least one or more of titanium (Ti), tantalum (Ta), niobium (Nb), hafnium (Hf), tungsten (W), yttrium (Y), zinc (Zn), zirconium (Zr), or aluminum (Al), or a compound containing one or more of such element(s). In preferred embodiments, the catalyst is a supported catalyst, the alkane is selected from the group consisting of ethane, propane, isobutane, n-butane and ethyl chloride, molecular oxygen is co-fed with the alkane to a reaction zone maintained at a temperature ranging from about 250° C. to about 350° C., and the ethane is oxidatively dehydrogenated to form the corresponding alkene with an alkane conversion of at least about 10% and an alkene selectivity of at least about 70%.