摘要:
Process for regenerating or activating a catalyst for isomerizing n-paraffins, containing at least one group VIII metal supported on an acid mordenite, wherein, after having lost at least a part of its initial activity, said catalyst is treated in a first step with an oxygen-containing gas at a temperature lower than about 550.degree. C., so as to remove the major part of the catalyst coke content, and in a second step the resultant product from the first step is oxychlorinated to a temperature of about 200.degree.-500.degree. C. by means of a gas mixture containing oxygen, water and chlorine or at least one chlorinated compound, said chlorine or chlorinated compound being used in a total amount of 0.5-10% by weight, calculated as chlorine, in proportion to the mordenite weight.
摘要:
A catalyst for isomerizing a hydrocarbon cut of high n-paraffin content is disclosed. The catalyst is obtained by controlled oxychlorination of a solid containing at least one group VIII metal supported on an acid mordenite, said mordenite having a sodium content lower than 0.2% by weight, adsorbing molecules of a kinetic diameter larger than about 6.6 Angstroms, having a mesh volume, V, of the elementary mesh from 2.73 to 2.78 nm.sup.3 and a benzene adsorption capacity higher than 5% by weight, said oxychlorination being conducted at a temperature of about 200.degree.-500.degree. C. by means of a gas mixture containing oxygen, water, chlorine or at least one chlorinated compound used in a total amount from 0.5 to 10% by weight of chlorine, in proportion to the mordenite weight. The catalyst may further contain a matrix, the mordenite amount being at least 40% by weight of the total amount of mordenite and matrix.
摘要:
A catalytic reforming process using catalysts containing a carrier, platinum, rhenium and optionally at least one metal selected from the group consisting of tin, germanium, lead, indium, thallium and titanium, arranged in several successive catalyst beds wherein the catalyst of the first bed has a Re/Pt ratio higher than the Re/Pt ratio of the catalyst used in the last bed, said catalyst of the last bed containing at least 0.08% of rhenium in proportion to the carrier.The catalysts preferably contain at least one halogen in an amount, expressed in proportion to the carrier, from 0.1 to 15%, said carrier preferably consisting mainly of alumina.In a preferred embodiment 3 successive catalyst beds are used wherein the Re/Pt ratios are, as a whole, decreasing from the first bed to the last bed.
摘要翻译:一种使用催化剂的催化重整方法,其中催化剂含有载体,铂,铼和任选的至少一种选自锡,锗,铅,铟,铊和钛的金属,其布置在几个连续的催化剂床中,其中第一床的催化剂 Re / Pt比高于最后一个床中使用的催化剂的Re / Pt比,最后一个床的催化剂含有与载体成比例的至少0.08%的铼。 催化剂优选含有至少一种与载体成比例地表示的卤素,为0.1至15%,所述载体优选主要由氧化铝组成。 在优选的实施方案中,使用连续的催化剂床,其中Re / Pt比率总体上从第一床到最后一床减小。
摘要:
A process for the catalytic reforming of a hydrocarbon charge wherein the charge passes successively through at least two catalyst beds, the first one being a bed of a first catalyst whose carrier contains platinum, rhenium and at least one halogen, at least the last bed being a moving bed of a second catalyst whose carrier contains platinum, at least one additional metal M selected from the group consisting of tin, gallium, germanium, indium, lead and thallium and at least one halogen, said metal M being introduced onto this carrier by means of an organometallic compound and the proportion by weight of said second catalyst being from 25 to 55% of the total catalyst mass used in all the catalyst beds. The charge preferably passes through at least two fixed beds of the first catalyst and at least one moving bed of the second catalyst, the carrier of the two catalysts being preferably alumina.By this process high grade gasolines (of Research Octane Number higher than 95) are produced over long periods.
摘要:
In a catalytic reforming process wherein a charge is circulated successively through a first catalyst bed and then at least one further catalyst bed, the improvement wherein the catalyst of the first bed comprises a carrier of alumina base and, by weight in proportion to the carrier, 0.05-0.6% of platinum, 0.005-3% of rhenium and 0.1-15% of at least one halogen and wherein each catalyst of the other beds contains a carrier of alumina base and, by weight with respect to the carrier, 0.05-0.6% of platinum, 0.05-3% of at least one metal promoter selected from the group consisting of tin, thallium and indium and 0.1-15% of at least one halogen, the proportion by weight of the catalyst containing platinum and rhenium ranging from 8 to 40% with respect to the total catalyst mass used in all the catalyst beds.
摘要:
The present invention concerns a new decationized, dealuminated and stabilized zeolite of L type, characterized particularly by:a total SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio of at least 8,a potassium content lower than 2.9% by weight,parameters a and c of the elementary mesh respectively lower than 1.836 nm and 0.754 nm,a nitrogen adsorption capacity at 77 K, for a partial pressure P/Ps of 0.19, higher than 11% by weight,a benzene adsorption capacity at 30.degree. C., for a partial pressure P/Ps of 0.25, higher than 8.5% by weight, anda lattice of mesopores whose radii, measured by nitrogen adsorption-desorption at 77 K according to the BJH method, range from 0.8 nm to 20 nm.
摘要翻译:本发明涉及一种新型的分解,脱铝和稳定的L型沸石,其特征在于特征在于:总SiO 2 / Al 2 O 3摩尔比至少为8,钾含量低于2.9重量%,基本网格的参数a和c 分别低于1.836nm和0.754nm,对于分压P / Ps为0.19,高于11重量%,在30℃下的苯吸附容量为77K时的氮吸附容量,对于分压P / Ps为0.25,高于8.5重量%,并且根据BJH方法在77K下通过氮吸附 - 解吸测定的半径为0.8nm〜20nm的中孔的晶格。
摘要:
A catalyst comprising a carrier, rhodium and at least one element selected from the group consisting of tin, germanium and lead is prepared from a rhodium compound and an alkyl, cycloalkyl or aryl tin, germanium or lead compound.
摘要:
Alcohols and particularly fatty alcohols are manufactured by hydrogenolysis of carboxylic esters in the presence of a catalyst comprising a carrier, rhodium and at least one second element selected from the group consisting of tin, germanium and lead. The rhodium content is from 0.1 to 5% b.w. and the content of the second element is from 0.1 to 10% b.w.
摘要:
For the selective hydrogenation of a hydrocarbon charge containing at least one acetylenic and/or diolefinic hydrocarbon, there is used a catalyst comprising at least one group VIII metal selected from the platinum, palladium, nickel and cobalt group, or a compound thereof, and at least one metal from the group comprising germanium, tin and lead or a compound thereof, wherein at least one compound from one of the above-defined group VIII metals and at least one compound of metal from the germanium, tin and lead group is incorporated in a carrier, e.g., alumina, and wherein the compound of metal from the germanium, tin and lead group is incorporated in the carrier as a hydrocarbyl compound of said metal.
摘要:
The present invention relates to a process and a reactor for low pressure catalytic reforming of gasolines with heating by smoke gases.The reactor of the invention comprises:at least one means for introducing and removing the charge,at least one means for introducing and removing the catalyst,at least two elementary reaction cells not adjacent each other, substantially vertical and parallelepipedic, substantially parallel to each other, each of said cells being formed of three substantially parallelepipedic enclosures (an individual charge distributor, an individual processed charge collector, a catalytic bed),at least one general charge distributor,at least one general processed charge collector.The reforming process of the invention may be used in this reactor, smokes-based heating gases, coming from the combustion in air of a hydrocarbon mixture, flowing between the elementary reaction cells and thus bringing the heat required for the reforming reaction.