DEVELOPMENT OF EFFECTIVE CATALYSTS FOR PROCESSING C3-C4 HYDROCARBONS
نویسندگان
چکیده
The aim of the article is to study effect preparation and activation methods a modified zeolite-containing catalyst on activity stability catalytic properties displayed by it during conversion C3-C4 hydrocarbons. During experiment, industrial cracking OMNIKAT, which zeolite in sodium form, was used as initial one. Zinc, gallium, REE (rare earth elements) were sequentially applied decationized samples this ion exchange, impregnation, dry mechanical mixing, these observed. As result comparative analysis regularities aromatization hydrocarbons, found that mixing method most preferable, since provides best process performance. In order improve catalysts, thermocouple thermal activations carried out process. Further, differences revealed for their selectivity zinc-galliumzeolite-containing with respect ArH (aromatic hydrocarbons) choice particular operations dictated fact preliminary vapor treatment practically does not require significant capital expenditures, i.e., economically acceptable. Regularities reaction-regeneration cycles established. Thus, optimal technological parameters regeneration compositions are: temperature - 600°C, atmospheric pressure, oxidizer air feed rate 2 h-1, lead restoration spent fresh level. Studies oxidative zinc-gallium-zeolite-containing have shown while maintaining clearly regulated regime, latter restored. main task research development effective catalysts C3- C4 Therefore, first place, we compared rates ArH. proposed characterized good operational (high long service life), providing 59.2% weight target product yield at 98.8%
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ژورنال
عنوان ژورنال: Izvestiâ Nacional?noj akademii nauk Respubliki Kazahstan. Seriâ himii i tehnologii
سال: 2021
ISSN: ['2518-1491', '2224-5286']
DOI: https://doi.org/10.32014/2021.2518-1491.56