Abstract:
Silane is produced in a continuous process by disproportionating trichlorsilane in at least 2 recreation areas for reaction/distillation, which are run through by a countercurrent of steam and liquid in the presence of catalytically active solid under a pressure which ranges between 500 mbar and 50 bar.
Abstract:
A clarifying catalyst body in an apparatus of hydrogen purification is such that a first catalyst containing at least one kind selected from the group consisting of Pt, Pd, Ru and Rh and a second catalyst containing at least one kind selected from the group consisting of Pd, Ru, Rh and Ni are mixed or integrated, The purifying catalyst body in the apparatus of hydrogen purification consists of (1) an oxide containing at least either Al or Si, (2) at least one kind of transition metal and/or a transition metal oxide and (3) at least one kind of noble metal and/or noble metal oxide selected from the group consisting of Pt, Ru, Pd and Rh.
Abstract:
A method for producing carbon nanostructures using a chemical vapor deposition process. A carbon source and a mixture catalyst are used wherein the mixture catalyst includes at least one element, from a group A including Fe, Co and Ni, and at least one supporting element, from a group B including lanthanides. The lanthanide elements can be used to lower the melting point of the catalyst by forming alloys so that the carbon nanostructures can be grown at lower temperatures. Further, the lanthanide elements also enhance catalyst activity of Ni, Co or Fe by changing the catalyst surface electronic properties. Also, the lanthanide elements also scavenger excess carbon so that carbon nanostructures can be grown without contamination.
Abstract:
Disclosed is an apparatus for the calcination of materials using low temperature heating and indirect heating for calcination. Also disclosed are a variety of processes for calcination of materials which have-reduced emissions of pollutants compared to conventional processes.
Abstract:
A tubular reactor with a catalyst bed and inserts placed within the tubes redirecting the flow from the center to the wall of the tube. The redirected flow increases the amount of heat transfer through the system by moving the reactants from the low heat transfer zone at the center of the tube to the high heat transfer zone at the wall of the tube. In one embodiment, the tubular reactor comprises a tubular reactor having a series of tubes, within the tubes are a plurality of flow obstructing inserts and a catalyst bed. The inserts may comprise a plurality of inclined, conical, or spiral plates. The plates may be affixed to the wall of the tube and may depend on the catalyst bed for structural support.
Abstract:
The reactive distillation is carried out in a column (1) with a packing (2) which is at least partly designed as a catalyst carrier (23). Fluids (3, 4) which form two phases of different densities flow through the packing. An internal volume flow (300) is set for the denser fluid (3), the value of which lies in an interval (I) about a distinguished value (a), with this value being associated with a dwell time distribution (32) of the denser fluid: For the distinguished value the variance (s) of the dwell time distributionnullas a function of the internal volume flownulltakes on a minimum; and at the boundaries of the named interval the internal volume flow does not differ from the distinguished value by more than 30%, preferably by more than 10%.
Abstract:
Disclosed is a new integrated flameless distributed combustion-membrane steam reforming (FDC-MSR) reactor apparatus for steam reforming of any vaporizable hydrocarbon to produce H2 and CO2, with minimal CO, and virtually no CO in the H2 stream. The flameless distributed combustion drives the steam reforming reaction which provides great improvements in heat exchange efficiency and load following capabilities. A further embodiment of the invention involves a zero emission hybrid power system wherein the produced hydrogen is used to power a high-pressure internally manifolded molten carbonate fuel cell. In addition, the design of the FDC-SMR powered fuel cell makes it possible to capture good concentrations of CO2 for sequestration or use in other processes.
Abstract:
A method of decomposing a thermosetting resin by a decomposer comprising the steps of: pre-heating the thermosetting resin up to a pre-heating temperature T0; kneading the pre-heated thermosetting resin together with a decomposer, and concurrently heating a mixture comprising the thermosetting resin and the decomposer up to a kneading temperature T1, thereby allowing a reaction to take place between the decomposer and the thermosetting resin to obtain a kneaded matter wherein the decomposer becomes consumed; and heating the kneaded matter to a maximum temperature T2 to thereby decompose the thermosetting resin; wherein the preheating temperature T0 is not higher than the boiling temperature of the decomposer; the kneading temperature T1 is not lower than the pre-heating temperature T0 but is lower than the thermal decomposition temperature of the thermosetting resin; the maximum temperature T2 is lower than the decomposition temperature of the thermosetting resin; and the pre-heating of the thermosetting resin is performed under the following conditions of temperature T0 and time t: 100null C.nullT0
Abstract:
Modular, stackable, flow-through plate or channel reactor units for continuous, low temperature, catalytic reactions of two separate process reaction streams; typically the first is an exothermic combustion process and the second, an endothermic reforming process. Each reactor unit comprises two separate sets of flow channels or slot-type reaction zones formed in flow plates located between spaced, thin metal, highly heat-conductive metal foil or platelet separator walls, adjacent reactors in a stack including a common, medially located, bicatalytic separator plate, i.e., a separator plate having on opposed surfaces the same or different catalysts selected for the particular reaction taking place in the adjacent reactor zone. Each flow plate has a relieved medial area defining the reaction zone, the side walls of which are the catalyst coated separator platelets. A separator platelet thus separates two adjacent reaction zones, one on each side and functions to transfer heat from the combustion occurring at the catalyst surface in the combustion zone directly to the reforming catalyst coated on the opposed surface. The reaction zones may include structures such as grooved plates or packed spheres to direct the feedstock gases to the catalyst coated on the platelet surfaces. Support frames, gaskets, manifolding, insulating spacers, end plates and assembly hardware and methods are also disclosed. Multiple modular reactor units or cells may be stacked to provide a reactor of any desired throughput capacity and portability. The invention also comprises methods for the catalytic reforming of hydrocarbon fuels for the production of synthesis gas or hydrogen employing the bicatalytic reactor of the invention.
Abstract:
This invention relates generally to a method for producing composites of single-wall carbon nanotubes (SWNTs) and compositions thereof. In one embodiment, the present invention involves a method of producing a composite material that includes a matrix and a carbon nanotube material embedded within said matrix. In another embodiment, a method of producing a composite material containing carbon nanotube material is disclosed. This method includes the steps of preparing an assembly of a fibrous material; adding the carbon nanotube material to the fibrous material; and adding a matrix material precursor to the carbon nanotube material and the fibrous material.