Production of light olefins and aromatic hydrocarbons through catalytic cracking of naphtha at lowered temperature

Wei, Yingxu; Liu, Z.; Wang, G.; Qi, Yue; Xu, Lei-Luo; Xie, Peng; He, Yuting

doi:10.1016/s0167-2991(05)80468-9

Cited by 72 publications

(27 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The ZSM-5 zeolite (SiO 2 /Al 2 O 3 = 38, Specific Surface Area (m 2 /g)= 320), purchased from Tianjin Chemist Scientific Ltd., was converted to HZSM-5 form by conventional ion-exchanging with ammonium nitrate solution [3,7]. Protonic form of ZSM-5 (HZSM-5) were prepared by for 60 min, then NH 3 gas was switched to He gas with the flow rate of 50 cm 3 min -1 .…”

Section: Catalyst Preparation and Characterizationmentioning

confidence: 99%

“…It is the first energy-consuming process in the petrochemical industry that requires high reaction temperature of 800-880 o C, which accounts for 40% of the total energy consuming every year in the entire petrochemical industry and results in the great amount of CO 2 emission [3,4]. Global environmental issues have stimulated the development of technologies that not only maximize energy and resource savings but also decrease CO 2 emissions.…”

Section: Introductionmentioning

confidence: 99%

“…ion-exchanging ZSM-5 at 80 °C with 1 M solution of NH 4 NO 3 for 3 h[3]. Then, the product was filtered, washed, and dried at 110 °C for 12 h, after that calcined at 550 °C for 4 h in air[3, 10, …”

mentioning

confidence: 99%

See 2 more Smart Citations

Kinetic modeling of catalytic cracking of C4 alkanes over La/HZSM-5 catalysts in light olefin production

Rahimi

Karimzadeh

2015

Journal of Analytical and Applied Pyrolysis

View full text Add to dashboard Cite

Section: Catalyst Preparation and Characterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Kinetic modeling of catalytic cracking of C4 alkanes over La/HZSM-5 catalysts in light olefin production

Rahimi

Karimzadeh

2015

Journal of Analytical and Applied Pyrolysis

View full text Add to dashboard Cite

“…Typically, ethylene and propylene are produced via various processes such as steam cracking, fluid catalytic cracking (FCC) and on-purpose processes [1]. Among them, a high portion of light olefins has been produced via steam cracking, which requires severe conditions operated at a very high temperature (>850 • C), eventually yielding a high amount of methane and carbon dioxide as by-products [2,3]. In order to circumvent this problem, catalytic processes such as catalytic cracking and methanol to light olefins (MTO) are one of the most promising alternative routes for efficient light olefin production because of their lower operating temperature and a controllable product distribution.…”

Section: Introductionmentioning

confidence: 99%

A Comprehensive Review of the Applications of Hierarchical Zeolite Nanosheets and Nanoparticle Assemblies in Light Olefin Production

Dugkhuntod

Wattanakit

2020

Catalysts

View full text Add to dashboard Cite

Light olefins including ethylene, propylene and butylene are important building blocks in petrochemical industries to produce various chemicals such as polyethylene, polypropylene, ethylene oxide and cumene. Traditionally, light olefins are produced via a steam cracking process operated at an extremely high temperature. The catalytic conversion, in which zeolites have been widely used, is an alternative pathway using a lower temperature. However, conventional zeolites, composed of a pure microporous structure, restrict the diffusion of large molecules into the framework, resulting in coke formation and further side reactions. To overcome these problems, hierarchical zeolites composed of additional mesoporous and/or macroporous structures have been widely researched over the past decade. In this review, the recent development of hierarchical zeolite nanosheets and nanoparticle assemblies together with opening up their applications in various light olefin productions such as catalytic cracking, ethanol dehydration to ethylene, methanol to olefins (MTO) and other reactions will be presented.Catalysts 2020, 10, 245 2 of 15 windows, they can be divided into three different categories including large porous, medium porous and small porous zeolites, which are composed of a different number of tetrahedral units, or T atoms of 12, 10 and 8 membered rings, respectively. These behaviors make each zeolite serving unique shape selective properties, which are very important for the appropriate applications.Although there are several above-mentioned promising properties of zeolites, they are typically composed of a very small microporous structure, eventually resulting in some disadvantages of the diffusion limitation of guest molecules inside the framework. Some bulky molecules cannot easily penetrate into active sites located at microporous channels, and therefore a poor catalytic performance due to a very low reaction rate and a fast deactivation of catalysts is observed. To overcome these limitations and to improve the accessibility of molecules into active sites, in recent years modified zeolites obtained by introducing additional larger porous structures have been extensively developed [5][6][7][8].It is well known that hierarchical zeolites, composed of at least two levels of porous structures such as microspores and mesopores, microspores and macropores, and micropores/mesopores and macropores have been extensively studied and developed. Their microporous (<2 nm), mesoporous (2-50 nm) and/or macroporous (>50 nm) structures are well connected to each other. In this case, the additional larger porous structures can improve diffusion limitation, molecular transportation and coke deposition [9]. In the past decade, there have been several studies regarding the synthesis of hierarchical zeolites to overcome these problems. Herein, this comprehensive review opens up perspectives of the recent synthesis approaches of hierarchical zeolite nanosheets and nanoparticle assemblies, as well as the successful production of light olef...

show abstract

“…The type of the zeolite can be selected according to feed properties and required products. Also, to improve zeolites performance, they were modified with rare earth and transition metals [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

The effect of key factors on thermal catalytic cracking of naphtha over Ce–La/SAPO-34 catalyst by statistical design of experiments

Taghipour

Towfighi

Mohamadalizadeh³

et al. 2013

Journal of Analytical and Applied Pyrolysis

View full text Add to dashboard Cite

Production of light olefins and aromatic hydrocarbons through catalytic cracking of naphtha at lowered temperature

Cited by 72 publications

References 3 publications

Kinetic modeling of catalytic cracking of C4 alkanes over La/HZSM-5 catalysts in light olefin production

Kinetic modeling of catalytic cracking of C4 alkanes over La/HZSM-5 catalysts in light olefin production

A Comprehensive Review of the Applications of Hierarchical Zeolite Nanosheets and Nanoparticle Assemblies in Light Olefin Production

The effect of key factors on thermal catalytic cracking of naphtha over Ce–La/SAPO-34 catalyst by statistical design of experiments

Contact Info

Product

Resources

About