Preparation and characterization of nanosized ZSM-5 zeolite using kaolin and investigation of kaolin content, crystallization time and temperature changes on the size and crystallinity of products

Khatamian, M.; Irani, Mahdieh

doi:10.1007/bf03246519

Cited by 83 publications

(35 citation statements)

References 11 publications

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“…In contrast, the PP/OD composite film without ZL yielded an amorphous halo in the 2θ range of 15-25°a s well as four sharp diffraction peaks at 2θ = 14.0, 16.9, 18.5, and 21.5°, which are attributed to the (110), (040), (130), and (301) crystal planes of pure PP, respectively [34]. Furthermore, the XRD patterns of the five PP/OD/ZL composite films with 3-30 wt% ZL show several crystalline peaks that are almost identical to those observed for pure ZL in the 2θ range of 5-30°, with their intensities proportional to the ZL content [14,32]. As the ZL content increased from 0 to 30%, the mean intermolecular distance related to the 2θ values of the (110), (040), (130), and (200) crystal planes of PP in the composite films slightly decreased in accordance with Bragg's law (see Table 2).…”

Section: Morphology Of the Pp/od/zl Composite Filmsmentioning

confidence: 73%

“…Figure 3 shows the WAXD patterns of ZL and the PP/OD/ZL composite films, and the associated numerical values are summarized in Table 2. The XRD pattern of ZL shows several sharp diffraction peaks at 2θ = 7.9, 8.7, 14.7, 23.0, 23.9 and 24.5°, which correspond to (011), (020), (031), (051), (303) and (313) planes of the ZSM-5 zeolite structure [14,32,33]. In contrast, the PP/OD composite film without ZL yielded an amorphous halo in the 2θ range of 15-25°a s well as four sharp diffraction peaks at 2θ = 14.0, 16.9, 18.5, and 21.5°, which are attributed to the (110), (040), (130), and (301) crystal planes of pure PP, respectively [34].…”

Section: Morphology Of the Pp/od/zl Composite Filmsmentioning

confidence: 99%

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Effect of porous zeolite on temperature-dependent physical properties of polypropylene/octadecane (PP/OD) composite films

Kim¹,

Thanakkasaranee²,

Seo³

et al. 2018

Express Polym. Lett.

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Abstract. Polymeric materials with temperature-dependent gas permeabilities using a phase change material are designed and their applicability as a packaging system investigated. Polypropylene/octadecane/zeolite (PP/OD/ZL) composite films were prepared via extrusion process. ZL was used as a filler to enhance the dispersion and interfacial interaction between the OD and the PP originating from different flowabilities during the extrusion process. (FTIR) and (WAXD) analyses showed that the incorporation of ZL increased the interfacial interaction between PP and OD, resultantly enhancing the thermal stability, mechanical properties, and the oxygen transmittance rate and mechanical properties after contact with food simulants and thermal treatment. When the temperature was elevated from 10 to 30°C, oxygen and water vapor transmittance rate of the composite films increased sharply because of the influence of the OD content. It was surmised that temperaturedependent permeation jump caused by increasing of segmental mobility of OD phase and converting the crystalline structure to an amorphous one of OD phase in the composite films. However, the permeation jump in the composite films was weakened as the ZL content increased. These results are related to changes in the interfacial interaction and crystallinity in the composite films due to the addition of ZL.

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Section: Morphology Of the Pp/od/zl Composite Filmsmentioning

confidence: 73%

Section: Morphology Of the Pp/od/zl Composite Filmsmentioning

confidence: 99%

Effect of porous zeolite on temperature-dependent physical properties of polypropylene/octadecane (PP/OD) composite films

Kim¹,

Thanakkasaranee²,

Seo³

et al. 2018

Express Polym. Lett.

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“…Also, the Si-O-Si symmetric stretching vibration at 796 cm −1 was observed. This band might be related to the internal linkages in SiO 4 or AlO 4 of the ZSM-5 lattices [18,36]. The band near 546 cm −1 (double ring vibration) was presented for all catalysts, which indicated the formation of only ZSM-5 phase.…”

Section: -3 Ft-ir Spectramentioning

confidence: 92%

Catalytic cracking of inedible camelina oils to hydrocarbon fuels over bifunctional Zn/ZSM-5 catalysts

Zhao

Wei

Julson

et al. 2015

Korean J. Chem. Eng.

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Catalytic cracking of camelina oils to hydrocarbon fuels over ZSM-5 and ZSM-5 impregnated with Zn 2+ (named bifunctional catalyst) was individually carried out at 500 o C using a tubular fixed-bed reactor. Fresh and used catalysts were characterized by ammonia temperature-programmed desorption (NH 3 -TPD), X-ray diffractometer (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM) and nitrogen isothermal adsorption/desorption micropore analyzer. The effect of catalysts on the yield rate and qualities of products was discussed. The loading of Zn 2+ to ZSM-5 provided additional acid sites and increased the ratio of Lewis acid site to Brøn-sted acid site. BET results revealed that the surface area and pore volume of the catalyst decreased after ZSM-5 was impregnated with zinc, while the pore size increased. When using the bifunctional catalyst, the pH value and heating value of upgraded camelina oils increased, while the oxygen content and moisture content decreased. Additionally, the yield rate of hydrocarbon fuels increased, while the density and oxygen content decreased. Because of a high content of fatty acids, the distillation residues of cracking oils might be recycled to the process to improve the hydrocarbon fuel yield rate.

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“…These steel plates were washed with water and used for the experiments as such. ZSM-5 NPs zeolite samples were synthesized from kaolin clay as alumina source having a large amount of quartz (39%) and silicic acid as silica source by hydrothermal treatment with NaOH in the presence of tetra propyl ammonium hydroxide as a template, according to procedure reported elsewhere [18]. The prepared sample was characterized using XRD and SEM technique.…”

Section: Apparatus and Analysismentioning

confidence: 99%

Film Formation and Anticorrosive Behavior of Zn-ZSM-5 Nano-Sized Zeolite Composite Coatings

Safaei¹,

Safaei²,

Rahmanian³

2012

TOELECJ

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Abstract:The zinc-Zeolite Socony Mobil-Five nano-particles (Zn-ZSM-5 NPs) composite was prepared and applied successfully as a new coating material to improve the corrosion resistance of steel. The corrosion type and quality of both pure zinc and our new coating material, Zn-ZSM-5 NPs, were studied using mass loss, impedance and electro-chemical polarization techniques in a sodium chloride solution. Obtained results affirm that Zn-ZSM-5 NPs are non-permeable and their corrosion resistance is higher than the pure zinc. The surface morphology of our newly synthesized coating material, Zn-ZSM-5 NPs, was investigated using SEM and X-ray diffraction and the smaller grain size was observed in comparison with the pure zinc coating.

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Preparation and characterization of nanosized ZSM-5 zeolite using kaolin and investigation of kaolin content, crystallization time and temperature changes on the size and crystallinity of products

Cited by 83 publications

References 11 publications

Effect of porous zeolite on temperature-dependent physical properties of polypropylene/octadecane (PP/OD) composite films

Effect of porous zeolite on temperature-dependent physical properties of polypropylene/octadecane (PP/OD) composite films

Catalytic cracking of inedible camelina oils to hydrocarbon fuels over bifunctional Zn/ZSM-5 catalysts

Film Formation and Anticorrosive Behavior of Zn-ZSM-5 Nano-Sized Zeolite Composite Coatings

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