Abstract:
The invention relates to a method for the integrated production of aromatics and ammonia by reacting a gaseous stream A containing at least one C1 to C6 aliphatic compound and nitrogen in the presence of at least one catalyst. In one reaction, the C1 to C6 aliphatic compound is non-oxidatively converted into aromatics and the hydrogen released in said process is converted in a further reaction into ammonia.
Abstract:
The present invention provides porous body precursors and shaped porous bodies. Also included are catalysts and other end-use products based upon the shaped porous bodies and thus the porous body precursors. Finally, processes for making these are provided. The porous body precursors comprise a precursor alumina blend capable of enhancing one or more properties of a shaped porous body based thereupon. The need to employ modifiers to achieve a similar result may thus be substantially reduced, or even avoided, and cost savings are thus provided, as well as savings in time and equipment costs.
Abstract:
In a so-called GTL process for producing liquid hydrocarbons containing fuel oil by producing synthesis gas from natural gas, subsequently producing Fischer-Tropsch oil from the obtained synthesis gas by way of Fischer-Tropsch synthesis and upgrading the produced Fischer-Tropsch oil, the synthesis gas produced from a synthesis gas production step is partly branched at a stage prior to getting to a Fischer-Tropsch oil production step and high-purity hydrogen is separated and produced from the synthesis gas entering the branch line. All the separated high-purity hydrogen is supplied to an upgrading reaction step and consumed as hydrogen for an upgrading reaction. Additionally, the synthesis gas entering the branch line is subjected to a water gas shift reaction to raise the hydrogen concentration before the step of separating and producing high-purity hydrogen and the residual gas left after the separation may be circulated to the synthesis gas production step as raw material for producing synthesis gas.
Abstract:
A carbon-based catalyst for flue gas desulfurization is brought into contact with a flue gas containing at least SO 2 gas, oxygen and water vapor so that the SO 2 gas can react with the oxygen and the water vapor to form sulfuric acid which is to be recovered. On a surface of the carbon-based catalyst, iodine, bromine or a compound thereof is added, ion exchanged or supported and a water-repellent treatment is applied. The carbon-based catalyst can also be used as a mercury adsorbent for flue gas treatment for adsorbing and removing metallic mercury from a flue gas containing metallic mercury, SO 2 gas, oxygen and water vapor.
Abstract:
Disclosed is a process for the production of an oxygen-containing organic compound by oxidizing an organic compound with molecular oxygen in a liquid phase in the presence both of a catalytic nitrogen-containing cyclic compound and a catalyst including a solid superacid and, supported thereon, a transition metal compound, in which the nitrogen-containing cyclic compound contains, as a ring constituent, a skeleton represented by following Formula (1), wherein X represents an -OR group, and wherein R represents hydrogen atom or a hydroxyl-protecting group. The process gives the oxygen-containing organic compound in a high yield and enables easy recovery and reuse of the catalyst.
Abstract:
A composition comprises a templated metal oxide substrate having a plurality of pores and a catalyst material comprising silver. The composition under H 2 at 30 degrees Celsius, at a wavelength in a range of from about 350 nm to about 500 nm has a VIS-UV absorbance intensity that is at least 20 percent less than a standard silver alumina catalyst (Ag STD). The standard alumina is Norton alumina, and which has the same amount of silver by weight.
Abstract:
The invention covers a process for obtaining an alkaline earth or rare earth metal-P-modified molecular sieve (M-P-modified molecular sieve) comprising the following steps: a). selecting a molecular sieve selected from one of: - a P-modified molecular sieve which contains at least 0.3 wt% of P - a molecular sieve which is modified with P prior to or during step b) thereby introducing at least 0.3 wt % of P b). contacting said molecular sieve with an alkaline earth or rare earth metal-containing compound (M-containing compound) to introduce at least 0.05 wt% of the alkaline earth or rare earth metal to the molecular sieve. The invention also covers a catalyst composite comprising: a). at least 10 wt % of a M-P-modified molecular sieve comprising at least 0.05 % by weight of an alkaline earth or rare earth metal (M) and at least 0.3 wt% of P, b). optionally metal phosphate, c). optionally matrix material, and d). optionally binder. The catalyst of the invention can also be used in a process for making an olefin product from an oxygen-containing, halogenide-containing or sulphur-containing organic feedstock wherein said oxygen-containing, halogenide-containing or sulphur-containing organic feedstock is contacted in the XTO reactor with the catalyst composite according to the invention under conditions effective to convert the oxygen-containing, halogenide-containing or sulphur-containing organic feedstock to olefin products (the XTO reactor effluent). The catalyst composite of the invention can also be used in addition or alternatively in an OCP process.
Abstract:
Catalysts, catalyst systems, and methods for removing oxides of nitrogen and/or carbon monoxide in flue gases are provided where ammonia is used with a selective catalytic reduction catalyst for reducing oxides of nitrogen. An oxidation catalyst is utilized, which comprises particulate platinum or platinum/palladium dispersed on zirconia particles, the particulate platinum or platinum/palladium having an average particle size less than about 10 nm. The catalyst is effective to convert less than 20% of NO to NO.
Abstract:
The invention relates to a method for converting the sulphur compounds present in a gas, which contains H2S and sulphur compounds, into H2S. The method comprises the step A of contacting said gas with a reducing gas in the presence of a hydrogenation catalyst containing at least cobalt, molybdenum and an alumina substrate, the sum of the calculated contents of cobalt and molybdenum in their oxide form ranging from 3 to 25 wt %, the surface of said alumina being higher than 140 m2/g. The method further comprises the step B of contacting at least one fraction of the effluent gas from step A with a catalyst containing at least one alkaline-earth element, at least one dopant selected from the group containing iron, cobalt and molybdenum and at least one compound selected from the group including titanium oxide and zirconium oxide, wherein the catalyst of step B is either in a mass oxide form containing only said oxides, or in a supported oxide form.