摘要:
Gas conversion catalysts which possess a high resistance to catalyst poisoning such as sulfur and/or chlorine-containing compounds, comprise a catalyst composite of copper, zinc and aluminum compounds containing at least one metal selected from the metals consisting of groups IVB, VB, VIB and VIIB of the Periodic Table. This catalyst composition may be used to synthesize methanol from a feedstock of carbon monoxide and hydrogen.
摘要:
Adsorbents and methods for the adsorptive separation of para-xylene from a mixture containing at least one other C8 aromatic hydrocarbon (e.g., a mixture of ortho-xylene, meta-xylene, para-xylene, and ethylbenzene) are described. Suitable binderless adsorbents (e.g., formulated with the substantial absence of an amorphous material that normally reduces selective pore volume), particularly those with a water content from about 3% to about 5.5% by weight, improve capacity and/or mass transfer. These properties are especially advantageous for improving productivity in low temperature, low cycle time adsorptive separation operations in a simulated moving bed mode.
摘要:
Reduced co-production of toluene and C9 and higher aromatics such as trimethylbenzene, methylethylbenzene, and diethylbenzene is achieved in processes for the isomerization of xylenes to close to equilibrium using a layered catalyst having a thin outer layer of molecular sieve and hydrogenation metal component on a core, wherein at least about 75 mass-% of the hydrogenation metal component is in the outer layer.
摘要翻译:在使用具有薄的外层的层状催化剂使二甲苯异构化接近平衡的方法中,降低了甲苯和C 9 H 3和更高级芳族化合物如三甲基苯,甲基乙基苯和二乙基苯的共同生产 分子筛和核心上的加氢金属组分,其中至少约75质量%的氢化金属组分在外层中。
摘要:
An extruded catalyst comprising at least one molecular sieve material and an amorphous aluminum phosphate binder wherein the aluminum phosphate binder remains substantially amorphous after calcining.
摘要:
Metal catalyst complexes such as those containing a metal of Group VIII of the Periodic Table which have been used in organic reactions such as the hydroformylation of olefins to form alcohols may be recovered from the product alcohols by treating said alcohol with anhydrous gaseous ammonia at temperatures in the range of from about 0.degree. to about 100.degree. C. and pressures in the range of from about 5 to about 1000 psi to precipitate the solution catalyst complex and thereby enable the separation of the catalyst complex from the product to be accomplished in a relatively simple manner.
摘要:
A new catalyst and method of preparing the catalyst is presented. The catalyst is a molecular sieve used for cracking olefins, and has improved selectivity to increase propylene yields and to reduce the amount of aromatics and methane produced. The catalyst been ion-exchanged to reduce the alkali composition in the catalyst.
摘要:
Trace amounts of catalysts which are present in products resulting from organic reactions, such as rhodium which is present in the alcohol products resulting from a hydroformylation reaction, may be removed by treating the aforesaid products with a solid adsorbent such as a metal compound of Groups IA or IIA of the Periodic Table, molecular sieves or ion-exchange resins at a temperature in the range of from about ambient to about 100.degree. C. and a pressure in the range of from about atmospheric to about 100 atmospheres.
摘要:
The present invention comprises a process for producing propylene comprising the steps of contacting an olefin feed containing between about 40 and about 80 wt-% olefins and between about 20 and about 60 wt-% olefins and aromatics with a spherical catalyst to form a cracked product, the catalyst comprising about 30 to about 80 wt-% of a crystalline zeolite, the reaction conditions including a temperature from about 500° to 650° C., a hydrocarbon partial pressure of 70 to 280 kPa (10 to 40 psia), a liquid hourly space velocity in the range of 5 to 40 hr−1 and wherein propylene comprises at least 90 mol-% of the total C3 products.
摘要翻译:本发明包括一种生产丙烯的方法,包括以下步骤:将含有约40至约80重量%的烯烃和约20至约60重量%的烯烃和芳族化合物的烯烃进料与球形催化剂接触以形成裂化产物 ,催化剂包含约30至约80重量%的结晶沸石,反应条件包括约500℃至650℃的温度,70至280kPa(10至40psia)的烃分压, 在5至40小时-1的范围内的液时空速,其中丙烯占总C 3 N 3产物的至少90摩尔%。
摘要:
An improved process is disclosed for the selective disproportionation of toluene. The process uses a zeolitic catalyst which is oil-dropped in an amorphous aluminum phosphate binder and optionally is selectively precoked prior to toluene disproportionation. The catalyst and process provide enhanced selectivity for the production of paraxylene.