Synthesis of RHO Zeolites by Steam-Assisted Dry Gel Conversion

IF 1.1 4区工程技术 Q3 CHEMISTRY, ORGANIC

Petroleum Chemistry Pub Date : 2025-06-30 DOI:10.1134/S0965544125600870

E. Yu. Brazovskaya, Yu. A. Alikina, K. A. Belyaeva, O. Yu. Golubeva

引用次数: 0

Abstract

A series of RHO zeolites were synthesized by steam-assisted dry gel conversion (SAC). The effects of autoclave water volume, crystallization time, crystallization temperature, and ultrasonic treatment on the phase composition and particle size of RHO zeolites were investigated for the first time. Using X-ray diffraction analysis, scanning electron microscopy, and energy dispersive spectroscopy, the SAC method was found to synthesize high-purity and high-crystallinity RHO zeolites. The optimum synthesis conditions include a temperature of 140°C, a reaction time of 48 h, and 0.5 mL of water per 1 g of dry gel.

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蒸汽辅助干凝胶转化法合成RHO沸石

采用蒸汽辅助干凝胶转化（SAC）法制备了一系列RHO沸石。首次研究了热压釜水量、结晶时间、结晶温度和超声处理对RHO沸石相组成和粒径的影响。通过x射线衍射分析、扫描电镜和能谱分析，发现SAC法可以合成高纯度、高结晶度的RHO沸石。最佳合成条件为温度140℃，反应时间48 h，每1g干凝胶加入0.5 mL水。

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来源期刊

Petroleum Chemistry 工程技术-工程：化工

CiteScore

2.50

自引率

21.40%

发文量

102

审稿时长

6-12 weeks

期刊介绍： Petroleum Chemistry (Neftekhimiya), founded in 1961, offers original papers on and reviews of theoretical and experimental studies concerned with current problems of petroleum chemistry and processing such as chemical composition of crude oils and natural gas liquids; petroleum refining (cracking, hydrocracking, and catalytic reforming); catalysts for petrochemical processes (hydrogenation, isomerization, oxidation, hydroformylation, etc.); activation and catalytic transformation of hydrocarbons and other components of petroleum, natural gas, and other complex organic mixtures; new petrochemicals including lubricants and additives; environmental problems; and information on scientific meetings relevant to these areas. Petroleum Chemistry publishes articles on these topics from members of the scientific community of the former Soviet Union.