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    • 8. 发明授权
    • Process for preparation of synthetic mordenite molded body
    • 合成丝光沸石成型体的制备方法
    • US4861571A
    • 1989-08-29
    • US909246
    • 1986-09-19
    • Masashi HaradaHiroshi MiyazakiKeiji Itabashi
    • Masashi HaradaHiroshi MiyazakiKeiji Itabashi
    • C01B39/26B01J29/18C01B20060101C01B33/26
    • C01B33/2861
    • A synthetic mordenite molded body is prepared by a process wherein a starting mixture comprising, as the main components, a silica source, an alumina source, an alkali source and water is molded into a starting molded body, the molded body is calcined and the calcined molded body is heated in an aqueous solution of sodium silicate. The starting mixture has incorporated therein a mordenite seed crystal powder. When the molded body is calcined, the temperature is elevated by heating to a calcination temperature not lower than 400.degree. C. at an average rate of at least 10.degree. C./min and calcination is conducted at the calcination temperature within a time period of 2 hours. When the calcined molded body is crystallized, an aqueous solution of sodium silicate having an SiO.sub.2 concentration of 7 to 25% by weight, an Na.sub.2 O concentration of 2 to 8% by weight and an SiO.sub.2 /Na.sub.2 O molar ratio of from 0.9 to 4.0 is used as the aqueous solution of sodium silicate.
    • 合成丝光沸石成型体通过以下方法制备,其中将起始混合物作为主要成分,二氧化硅源,氧化铝源,碱源和水模制成起始成型体,将成型体煅烧并煅烧 将成型体在硅酸钠水溶液中加热。 起始混合物中掺入丝光沸石晶种粉末。 当煅烧成型体时,通过以至少10℃/分钟的平均速率加热至不低于400℃的煅烧温度升高温度,并且在煅烧温度下在煅烧温度下进行煅烧,时间为 2小时。 当煅烧成型体结晶时,使用SiO 2浓度为7〜25重量%,Na 2 O浓度为2〜8重量%,SiO 2 / Na 2 O摩尔比为0.9〜4.0的硅酸钠水溶液 作为硅酸钠水溶液。