Synthesis of mesoporous ZSM-5 zeolites through desilication and re-assembly processes

Yoo, Won Cheol; Zhang, Xueyi; Tsapatsis, Michael; Stein, Andreas

doi:10.1016/j.micromeso.2011.08.014

Cited by 127 publications

(98 citation statements)

References 50 publications

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“…Na et al observed that recrystallized zeolites in the presence of different chain length of alkyltrimethylammonium bromide possess narrow and ordered mesopores, and more acid sites which leads to the improvement in the catalytic cracking activity compared to desilicated ones 26 . Moreover, some studies found that the physicochemical properties of the zeolite composites prepared through desilication and re-assembly processes depended on the Si/Al ratios, the hydroxide concentration and the presence of surfactants [27][28][29] .…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Exploring suitable ZSM-5/MCM-41 zeolites for catalytic cracking of n-dodecane: Effect of initial particle size and Si/Al ratio

Diao

et al. 2015

Chinese Journal of Chemical Engineering

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Section: Accepted Manuscriptmentioning

confidence: 99%

Exploring suitable ZSM-5/MCM-41 zeolites for catalytic cracking of n-dodecane: Effect of initial particle size and Si/Al ratio

Diao

et al. 2015

Chinese Journal of Chemical Engineering

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“…The cisplatin samples were made using an iCAP 6500 Duo (ICP-AES) [21][22][23][24] which employs a charged injection device detector, allowing the measurement of a broad range of metal concentrations. Table 1 shows the main instrumental characteristics used in this study [25].…”

Section: Instrumentationmentioning

confidence: 99%

Validation of a method to quantify platinum in cisplatin by inductively-coupled plasma

González‐Torres¹,

Torres²,

Torres³

et al. 2017

ChChT

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Abstract.1 Cis-diaminedichloroplatinum(II), also known as cisplatin, has been quantified by use of inductivelycoupled plasma. We measured cisplatin indirectly by determining the platinum concentration in the samples. We focus on the determination of Pt from cisplatin in water. We demonstrate that the total concentration of the drug can be quantified through the content of platinum with acceptable linearity, precision, repeatability, accuracy, limit of detection and limit of quantification. Our method is applicable among others for monitoring quality of control samples for cisplatin regulatory submissions and for determination of the cisplatin release profiles in biomarker implants in vitro.

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“…BEA, Y and ZSM-5 are widely known for their regular pore structures and high surface areas. While BEA and Y have large pores sizes, ZSM-5 has medium pore sizes [4][5][6][7][8][9].…”

Section: + Ch2=ch2 Amyl Benzene Cumene Ethylenementioning

confidence: 99%

Effect of Alkali Metal Ions on Different Zeolites for Alkylation of Cumene

Abdalah

2012

Al-Azhar Bulletin of Science

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The effects of alkali metal treatment on different zeolite catalysts are investigated to better understand the nature of alkali metal species for the selective catalytic alkylation of cumene by ethylene.H-ZSM5, Y and BEA zeolite catalysts with various molar ratios of K, Rb, and Cs are prepared by ion exchange method and calcined at 550 o C in air atmosphere for 2 h. The study was carried out at 300, 350, 400 and 450 °C for reaction times of 2 hours. Cumene conversion was found to increase with all different alkali metal additions and the reaction temperatures. The catalysts are characterized by temperature-programmed desorption of NH3/ or CO2 (TPD), Fourier transform infrared (FT-IR) after pyridine adsorption and inductively-coupled plasma emission spectrometry (i.c.p.e.s.). The FTIR results are compared to Lewis and Broensted acid sites. Furthermore, the relation between atomic size of alkali metal ion exchanged and the basicity of the catalyst is discussed. Among them the 0.025 M Cs exchanged is found as very active catalyst for alkylation of cumene with ethylene resulted in amyl benzene, styrene and ethyl benzene.

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Synthesis of mesoporous ZSM-5 zeolites through desilication and re-assembly processes

Cited by 127 publications

References 50 publications

Exploring suitable ZSM-5/MCM-41 zeolites for catalytic cracking of n-dodecane: Effect of initial particle size and Si/Al ratio

Exploring suitable ZSM-5/MCM-41 zeolites for catalytic cracking of n-dodecane: Effect of initial particle size and Si/Al ratio

Validation of a method to quantify platinum in cisplatin by inductively-coupled plasma

Effect of Alkali Metal Ions on Different Zeolites for Alkylation of Cumene

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