摘要:
Procédé d'hydrogénation d'au moins un composé aromatique ou polyaromatique contenu dans une charge d'hydrocarbures ayant un point d'ébullition final inférieur ou égal à 650°C, en présence d'un catalyseur comprenant une matrice oxyde ayant une teneur en alumine calcinée supérieure ou égale à 90% poids par rapport au poids total de ladite matrice, et une phase active comprenant du nickel, ladite phase active étant comalaxée au sein de ladite matrice oxyde majoritairement aluminique calcinée, la teneur en nickel étant comprise entre 1 et 65 % poids dudit élément par rapport au poids total du catalyseur, ladite phase active ne comprenant pas de métal du groupe VIB, les particules de nickel ayant un diamètre inférieur à 15 nm, ledit catalyseur ayant un diamètre médian mésoporeux compris entre 3 et 25 nm, un diamètre médian macroporeux compris entre 50 et 300 nm, un volume mésoporeux mesuré par porosimétrie au mercure supérieur ou égal à 0,40 mL/g et un volume poreux total mesuré par porosimétrie au mercure supérieur ou égal à 0,45 mL/g.
摘要:
Procédé d'hydrogénation sélective de composés polyinsaturés contenant au moins 2 atomes de carbone par molécule contenus dans une charge d'hydrocarbures ayant un point d'ébullition final inférieur ou égal à 300°C en présence d'un catalyseur comprenant une matrice oxyde ayant une teneur en alumine calcinée supérieure ou égale à 90% poids par rapport au poids total de ladite matrice, et une phase active comprenant du nickel, ladite phase active étant comalaxée au sein de ladite matrice oxyde majoritairement aluminique calcinée, la teneur en nickel étant comprise entre 1 et 65 % poids dudit élément par rapport au poids total du catalyseur, les particules de nickel ayant un diamètre inférieur à 15 nm, ledit catalyseur ayant un diamètre médian mésoporeux compris entre 3 et 25 nm, un diamètre médian macroporeux compris entre 50 et 300 nm, un volume mésoporeux mesuré par porosimétrie au mercure supérieur ou égal à 0,40 mL/g et un volume poreux total mesuré par porosimétrie au mercure supérieur ou égal à 0,45 mL/g.
摘要:
Disclosed are processes for conversion of a feedstock comprising C 8 + aromatic hydrocarbons to lighter aromatic products in which the feedstock and optionally hydrogen are contacted in the presence of a first and a second catalyst composition under conversion conditions effective to produce said lighter aromatic products comprising benzene, toluene and xylene. In the process, the C 8 + aromatic hydrocarbons are dealkylated to form C 6 -C 7 aromatic hydrocarbon and the C 2 + olefins formed are saturated. The remaining C 8 + aromatic hydrocarbons are transalkylated with the C 6 -C 7 aromatic hydrocarbon. The first and second catalyst compositions each comprise a first or second zeolite respectively, a first metal, and a second metal, and are treated with a source of sulfur and/or a source of steam. The first zeolite is selected from ZSM-5, ZSM-11, ZSM-22, ZSM-23, ZSM-35, ZSM-48, ZSM-57, ZSM-58 or mixtures of two or more thereof. The second zeolite is selected from ZSM-4, ZSM-12, ZSM-20, ZSM-50, zeolite beta, mordenite, faujasite, an MCM-22 family material, MCM-68, and mixtures of two or more thereof. The first metal is at least one group 6 metal; the second metal at least one group 9 or 10 metal.
摘要:
Disclosed are processes for conversion of a feedstock comprising Cs+ aromatic hydrocarbons to lighter aromatic products in which the feedstock and optionally hydrogen are contacted in the presence of the catalyst composition under conversion conditions effective to dealkylate and transalkylate said C 8 + aromatic hydrocarbons to produce said lighter aromatic products comprising benzene, toluene and xylene. The catalyst composition comprises a zeolite selected from zeolite beta, ZSM-4, ZSM-5, ZSM-11, ZSM-12, ZSM-20, ZSM-22, ZSM-23, ZSM-35, ZSM-48, ZSM-50, ZSM-57, ZSM-58, MCM-68, faujasite zeolite, mordenite zeolite or a MCM-22 family material, a first metal of group 6 in an amount of 0.001 wt% to 20.0 wt%, and a second metal of group 9 or 10 in an amount of 0.001 wt% to 20.0 wt %, and is treated with a source of sulfur and/or a source of steam.
摘要:
The first object of the invention is directed to a process for depositing TiO 2 on a substrate, comprising the steps of (a) providing a substrate, (b) performing said deposition with TiCl 4 and water by atomic layer deposition on said substrate; and (c) performing an annealing step. Said process is remarkable in that said step (b) is carried out at a temperature inferior to 50°C, and said step (c) is carried out at a temperature comprised between 450°C and 600°C in ambient air. The second object is directed to a photocatalyst comprising at least one layer of mesoporous hydrogenated TiO 2 on a substrate and obtainable by the process in accordance with the first object of the invention. The third object is directed to an use of said photocatalyst in a photocatalytic reaction performed under UV-visible light.
摘要:
Embodiments are directed to carbon nitride materials that provide appropriate characteristics for photocatalytic water splitting. The carbon nitride materials have a three dimensional CN material with a high nitrogen content that is stable under photocatalytic conditions. A method of producing a photocatalytic CN material comprises (a) contacting a mesoporous template having a selected porosity with an aminoguanidine hydrochloride solution, forming a template reactant mixture; and (b) heating the template reactant mixture, forming a carbon nitride material/template composite; (c) heating the CN/template composite in an inert gas atmosphere to about 350 °C to 450 °C, forming a cubic mesoporous carbon nitride material/template complex; and (d) removing the template from the mesoporous carbon nitride material/ template complex. The carbon nitrogen matrix is a based on C3N6diamino-s-tetrazine.
摘要:
Die Erfindung geht aus von bekannten Cer oder andere katalytisch aktive Komponenten enthaltenden Katalysatoren für die Herstellung von Chlor durch katalytische Gasphasenoxidation von Chlorwasserstoff mit Sauerstoff. Es wird ein Katalysatormaterial zur Herstellung von Chlor durch katalytische Gasphasenoxidation von Chlorwasserstoff mit Sauerstoff beschrieben, worin der Katalysator mindestens Oxidverbindungen des Cers als Aktivkomponente und Zirkondioxid-Mikropartikel als Trägerkomponente umfasst und worin sich der Katalysator durch eine besonders hohe auf die Katalysatormasse bezogene Ausbeute gemessen in kg C12 /kg KA T ·h auszeichnet.
摘要翻译:本发明从含有已知的铈或其它催化活性组分的催化剂开始,用于通过用氧气催化气相氧化氯化氢来生产氯。 中描述了一种催化剂材料,通过氯化氢与氧的催化气相氧化,其特征在于,所述催化剂包括铈的至少氧化物化合物作为活性组分和氧化锆微粒为Tr AUML制备氯气; gerkomponente,并且其中,所述催化剂是通过所测量的特别高的基于催化剂质量产 kg /公斤C12 / kg KA / T·h。 P>
摘要:
The invention relates to a process for preparing a porous material comprising metal, metalloid, or non-metal precursor, said process comprising the steps of: - dispersing the porous material in a hydrophobic solvent; - adding a metal, metalloid, or non-metal precursor solution in a hydrophilic solvent to the dispersed porous material and the hydrophobic solvent, thereby forming a mixture; and - selectively removing the hydrophilic solvent from the mixture; thereby impregnating the porous material with the metal, metalloid, or non-metal precursor solution; thereby preparing a porous material comprising metal, metalloid, or non-metal precursor. The process may additionally comprise a step of converting the precursor, and a step of removing the porous material. Also described is a nanostructured metal, metalloid, or non-metal decomposition product; or metal, metalloid, or non-metal; or metal, metalloid, or non-metal oxide. ln a preferred embodiment, nanostructured bismuth is prepared using mesoporous silica or mesoporous titania as the porous material, viz. template.
摘要:
The invention relates to a pyrolysis process comprising the steps of feeding a batch of organic and/or inorganic origin waste materials in a plasma pyrolysis reactor (4), generating a plasma arc inside a reactor chamber for carrying out the pyrolysis reaction and calculating a target temperature of the plasma arc as a function of one or more parameters relating to the type of organic and/or inorganic origin waste materials. The process further comprises the step of controlling the temperature of the plasma arc such as to maintain the actual temperature of the plasma arc as close as possible to the target temperature. Finally, pyrolysis oil is extracted from the reactor (4).
摘要:
The invention relates to a process for the regeneration of a working solution employed in the production of hydrogen peroxide by an anthraquinone process, said working solution containing alkyltetrahydro-anthraquinone epoxides as degradation products and alkyltetrahydro-anthraquinones as active compounds which comprises treating at least a part of said working solution with a supported gold-based catalyst in the presence of hydrogen to at least partially convert said alkyltetrahydro-anthraquinone epoxides into active alkyltetrahydro-anthraquinones.