Effect of Y zeolite mesoporousity on the catalytic cracking of vacuum gas oil (VGO)

IF 3 4区材料科学 Q2 CHEMISTRY, APPLIED

Journal of Porous Materials Pub Date : 2025-10-17 DOI:10.1007/s10934-025-01858-y

Mohammed I. Rashied, Rana Th. Abd Alrubaye, Samer G. Abdulridha, Radhaa N. Saeed

{"title":"Effect of Y zeolite mesoporousity on the catalytic cracking of vacuum gas oil (VGO)","authors":"Mohammed I. Rashied, Rana Th. Abd Alrubaye, Samer G. Abdulridha, Radhaa N. Saeed","doi":"10.1007/s10934-025-01858-y","DOIUrl":null,"url":null,"abstract":"<div><p>Mesoporous hierarchical Y zeolites were synthesized through a sequential process involving dealumination with ethylenediaminetetraacetic acid (EDTA) or oxalic acid (OX), followed by desilication using sodium hydroxide (NaOH). Characterization of the materials, employing X-ray diffraction (XRD), nitrogen adsorption–desorption, and scanning electron microscopy (SEM), confirmed significant structural modifications, an increase in mesoporosity, and an enhancement in external surface area. The OX–NaOH route demonstrated superior efficiency, achieving stable mesopores with surface areas exceeding 110 m²/g in shorter treatment times compared to the EDTA pathway. Catalytic testing in vacuum gas oil cracking at 420 °C revealed that the modified zeolite (DSY-OX3) yielded 41.1 vol% gasoline, a substantial improvement over the 18.4 vol% obtained with the parent Y zeolite. These findings suggest that the OX–NaOH method is a time- and energy-efficient approach for producing thermally stable mesoporous zeolites, making it a promising strategy for fluidized catalytic cracking (FCC) applications.</p></div>","PeriodicalId":660,"journal":{"name":"Journal of Porous Materials","volume":"33 1","pages":"199 - 212"},"PeriodicalIF":3.0000,"publicationDate":"2025-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Porous Materials","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s10934-025-01858-y","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, APPLIED","Score":null,"Total":0}

引用次数: 0

Abstract

Mesoporous hierarchical Y zeolites were synthesized through a sequential process involving dealumination with ethylenediaminetetraacetic acid (EDTA) or oxalic acid (OX), followed by desilication using sodium hydroxide (NaOH). Characterization of the materials, employing X-ray diffraction (XRD), nitrogen adsorption–desorption, and scanning electron microscopy (SEM), confirmed significant structural modifications, an increase in mesoporosity, and an enhancement in external surface area. The OX–NaOH route demonstrated superior efficiency, achieving stable mesopores with surface areas exceeding 110 m²/g in shorter treatment times compared to the EDTA pathway. Catalytic testing in vacuum gas oil cracking at 420 °C revealed that the modified zeolite (DSY-OX3) yielded 41.1 vol% gasoline, a substantial improvement over the 18.4 vol% obtained with the parent Y zeolite. These findings suggest that the OX–NaOH method is a time- and energy-efficient approach for producing thermally stable mesoporous zeolites, making it a promising strategy for fluidized catalytic cracking (FCC) applications.

Abstract Image

查看原文本刊更多论文

Y型沸石介孔对真空瓦斯油催化裂化的影响

采用乙二胺四乙酸（EDTA）或草酸（OX）脱铝，再用氢氧化钠（NaOH）脱硅的顺序工艺合成了介孔分级Y型沸石。利用x射线衍射（XRD）、氮吸附-解吸和扫描电镜（SEM）对材料进行了表征，证实了显著的结构修饰、介孔率增加和外表面积增强。与EDTA途径相比，OX-NaOH途径表现出更高的效率，在更短的处理时间内实现了表面积超过110 m²/g的稳定介孔。在420°C的真空气裂解催化试验中，改性后的分子筛（DSY-OX3）的汽油产率为41.1%，比母质Y分子筛的18.4%有了很大的提高。这些发现表明，OX-NaOH法是一种生产热稳定介孔分子筛的省时、节能的方法，是流化催化裂化（FCC）应用的一种很有前景的策略。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of Porous Materials 工程技术-材料科学：综合

CiteScore

4.80

自引率

7.70%

发文量

203

审稿时长

2.6 months

期刊介绍： The Journal of Porous Materials is an interdisciplinary and international periodical devoted to all types of porous materials. Its aim is the rapid publication of high quality, peer-reviewed papers focused on the synthesis, processing, characterization and property evaluation of all porous materials. The objective is to establish a unique journal that will serve as a principal means of communication for the growing interdisciplinary field of porous materials. Porous materials include microporous materials with 50 nm pores. Examples of microporous materials are natural and synthetic molecular sieves, cationic and anionic clays, pillared clays, tobermorites, pillared Zr and Ti phosphates, spherosilicates, carbons, porous polymers, xerogels, etc. Mesoporous materials include synthetic molecular sieves, xerogels, aerogels, glasses, glass ceramics, porous polymers, etc.; while macroporous materials include ceramics, glass ceramics, porous polymers, aerogels, cement, etc. The porous materials can be crystalline, semicrystalline or noncrystalline, or combinations thereof. They can also be either organic, inorganic, or their composites. The overall objective of the journal is the establishment of one main forum covering the basic and applied aspects of all porous materials.