摘要:
The invention provides a process for modifying a Fischer-Tropsch catalyst or catalyst precursor, the process comprising the steps of: contacting a Fischer-Tropsch catalyst or catalyst precursor comprising a titania carrier with a compound having the general formula RaX(4-a)Y wherein a is in the range of 1-3, and wherein the or each R is independently an alkyl or aryl group; Y is silicon or titanium, and, the or each X is independently chosen from the group consisting of hydrogen, an alkoxy group and ZY′BB′B2′, Z being oxygen, —NH, or —NR, wherein R is an alkyl or aryl group comprising 1 to 8 carbon atoms, Y′ being silicon or titanium, and B, B′ and B2 ,independently being hydrogen or an alkyl, aryl, or alkoxy group.In a preferred embodiment the compound RaX(4-a)Y is hexamethyldisilazane.
摘要:
A batch reaction system for simultaneously conducting reactions in at least two separate reactors (CSTR reactors), is provided wherein the at least two batch reactors, containing mixing means and a fluid inlet, a fluid feed common conduit is present for feed fluid to the reactors, which is connected to the inlet of each reactor of a fluid inlet conduits, and further includes a fluid discharge common conduit which is connected to the outlet of each reactor wherein in each fluid inlet conduit and/or in each fluid outlet conduit a non-return valve is arranged to prevent contamination but can provide simultaneous reactions wherein the reactors can be easily isolated from one another during reaction.
摘要:
There is provided a process for the incineration of gases containing sulphur compounds by contacting these gases with an oxygen-containing gas in the presence of a catalyst composition comprising (i) a metal selected from bismuth, molybdenum and chromium as a first metal component and (ii) at least one Group IIA metal as a second metal component, supported on a refractory oxide carrier not being a carrier comprising both aluminum and phosphorus.
摘要:
The system comprises a tubular vessel allowing a flow of fluid through said vessel and an assembly for housing said vessel. The assembly comprises a base block having a first channel formed therein for removably housing the vessel, said first channel having first and second channel openings allowing introduction and/or discharge of a fluid into and from said first channel. The assembly also comprises a cover element having a bottom surface being releasably attachable to the first face of the base block. A first sealing element is provided between the first face of the base block and the bottom surface of the cover element, the first sealing element surrounding the first channel opening completely, and thereby sealing gastight around said first channel opening between the cover element and the base block. The system further comprises a second sealing element located in the first channel, said second sealing element sealing gastight against the inside of the first channel and the outside of the vessel.
摘要:
The invention provides a process for the alkylation of an aromatics compound with a olefin alkylation agent which comprises contacting the aromatic compound, especially benzene, with the alkylation agent, especially ethylene and/or propylene, in the presence of an oxide material which is delayered MWW-type zeolitic material, very suitably the material known as ITQ-2.
摘要:
A fluid pressure regulator is provided having a housing with an inlet and outlet for fluid, a valve located movably inside the housing and provided with a fluid transport member to allow passage of fluid from the inlet to the outlet. The regulator also has a pressure setting member and a space defined by one end of the valve and an end wall of the housing. The valve is moveable relative to the housing in response to a change in pressure within the space between a first position which at least partially aligns the fluid transport member with each of the inlet and the outlet and a second position in which there is no alignment of the fluid transport member with at least one of the inlet and the outlet. A passage is provided in open communication with the space and one of the inlet, the outlet, and the transport member. Methods of using the pressure regulator are also provided.