摘要:
A novel particulate material for promoting combustion of carbon monoxide to carbon dioxide in the regeneration zone of a cyclic fluid cracking process without substantially affecting the ability of separate fluid cracking catalyst particles containing an active crystalline zeolitic aluminosilicate component to catalyze the hydrocarbon conversion reaction in the conversion zone. The novel promoter particles comprise coherent, catalytically inert microspheres of calcined kaolin clay having a SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio of about 2/1, a surface area (B.E.T.) in the range of about 10 to 15 m.sup.2 /g., a pore volume (as determined by nitrogen absorption) in the range of about 0.02 to 0.04 cc./gm., the calcined microspheres being impregnated with a trace amount of a platinum compound and being free from a component capable of cracking hydrocarbons in the absence of added hydrogen.
摘要翻译:一种用于在循环流体裂解过程的再生区中促进一氧化碳燃烧到二氧化碳的新型颗粒材料,而基本上不影响包含活性结晶沸石硅铝酸盐组分的分离的流体裂解催化剂颗粒在转化中催化烃转化反应的能力 区。 新型促进剂颗粒包含SiO 2 / Al 2 O 3摩尔比为约2/1,表面积(BET)为约10至15m2 / g范围内的煅烧高岭土的相干,催化惰性微球,孔体积( 通过氮吸收测定)在约0.02至0.04cc./gm的范围内,煅烧微球体用微量的铂化合物浸渍,并且在不存在加入氢气的情况下不含能够裂解烃的组分。
摘要:
A novel particulate material for promoting combustion of carbon monoxide to carbon dioxide in the regeneration zone of a cyclic fluid cracking process without substantially affecting the ability of separate fluid cracking catalyst particles containing an active crystalline zeolitic aluminosilicate component to catalyze the hydrocarbon conversion reaction in the conversion zone. The novel promoter particles comprise coherent, catalytically inert microspheres of calcined kaolin clay having a SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio of about 2/1, a surface area (B.E.T.) in the range of about 10 to 15 m.sup.2 /g., a pore volume (as determined by nitrogen absorption) in the range of about 0.02 to 0.04 cc./g., the calcined microspheres being impregnated with a trace amount of a platinum compound and being free from a component capable of cracking hydrocarbons in the absence of added hydrogen.
摘要翻译:一种用于在循环流体裂解过程的再生区中促进一氧化碳燃烧到二氧化碳的新型颗粒材料,而基本上不影响包含活性结晶沸石硅铝酸盐组分的分离的流体裂解催化剂颗粒在转化中催化烃转化反应的能力 区。 新型促进剂颗粒包含SiO 2 / Al 2 O 3摩尔比为约2/1,表面积(BET)为约10至15m2 / g范围内的煅烧高岭土的相干,催化惰性微球,孔体积( 通过氮吸收测定)在约0.02至0.04cc./g的范围内,煅烧微球体被微量铂化合物浸渍,并且在不存在加入氢气的情况下不含能够裂解烃的组分。
摘要:
Compositions and methods for preparing mesostructured zeolites having improved hydrothermal stability. Such mesostructured zeolites can be prepared by subjecting a zeolite to rare earth ion exchange prior to and/or subsequent to introducing mesoporosity into the zeolite.
摘要:
Methods for enhancing the mesoporosity of a zeolite-containing material. Such methods may comprise contacting a composite shaped article containing at least one zeolite and at least one non-zeolitic material with at least one pH controlling agent and at least one surfactant. Such methods may be performed under conditions sufficient to increase the pore volume of at least one 10 angstrom subset of mesoporosity.
摘要:
Methods for enhancing the mesoporosity of a zeolite-containing material. Such methods may comprise contacting a composite shaped article containing at least one zeolite and at least one non-zeolitic material with at least one pH controlling agent and at least one surfactant. Such methods may be performed under conditions sufficient to increase the pore volume of at least one 10 angstrom subset of mesoporosity.
摘要:
A method for increasing the zeolite content of high zeolite content clay derived microspheres obtained by reacting porous precursor microspheres with a sodium silicate solution in the presence of seeds to crystallize zeolite Y in situ in macropores of precursor microspheres composed of a mixture of metakaolin and kaolin calcined to undergo the exotherm. The increased zeolite content is achieved by increasing macroporosity of the precursor microspheres and increasing the content of metakaolin in the precursor microspheres. The increase in zeolite is associated with an increase in catalytic activity and unexpectedly improved selectivity.
摘要:
Compositions and methods for preparing mesostructured zeolites having improved hydrothermal stability. Such mesostructured zeolites can be prepared by subjecting a zeolite to rare earth ion exchange prior to and/or subsequent to introducing mesoporosity into the zeolite.