Influencing factors on rapid crystallization of high silica nano-sized zeolite Y without organic template under atmospheric pressure

Kim, Young Chang; Jeong, Jong Youn; Hwang, Ji Yeong; Kim, Shin Dong; Kim, Wha Jung

doi:10.1007/s10934-008-9200-4

Cited by 44 publications

(32 citation statements)

References 18 publications

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“…The channel length was decreased with an increase in Al(OH)3 (see Table 1). This was consistent with the report of Y. C. Kim et al [24]. As the Al2O3 increased, the crystal size was decreased.…”

Section: Ethylene Adsorptionsupporting

confidence: 93%

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Morphology-Controlled Synthesis of Zeolite and Physicochemical Properties

Insuwan¹,

Rangsriwatananon²

2012

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Zeolite L is a crystalline aluminosilicate compound and a typical chemical composition of K9Al9Si27O72•nH2O (n = 0-36). The structure and chemical properties, as well as their sizes and morphologies of zeolite L has led to various applications in different fields. The aim of this study is to investigate the effects of chemical compositions of the starting gel on the synthesis, size and morphology of zeolite L crystals. Zeolite L had been synthesized hydrothermally at 180 ˚C for 2 days, from gels with the molar compositions of 2.62-3.78 K2O: 0.8-1.4 Al2O3: 8-12 SiO2: 80-200 H2O. The variation of chemical compositions led to the differences in morphologies and crystal sizes. Their morphologies varied from ice hockey to cylindrical shapes and their crystal sizes varying from 1.50-7.53 µm. With an increase in H2O and SiO2, the crystal size was also increased but decreased with an increase in K2O. In varying Al2O3, there was no effect on their shapes which were still cylindrical but with different crystal sizes. Moreover, the adsorption of ethylene on zeolite L samples depended significantly on crystal shapes and sizes.

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Section: Ethylene Adsorptionsupporting

confidence: 93%

“…This may be attributed to the slowdown of nucleation and crystallization. The result agreed with the report of Y. C. Kim et al [24]. If the water content in the optimum composition increased to 160 moles, the long cylindrical shape of zeolite L crystal was obtained.…”

Section: Ethylene Adsorptionsupporting

confidence: 92%

Morphology-Controlled Synthesis of Zeolite and Physicochemical Properties

Insuwan¹,

Rangsriwatananon²

2012

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“…The first step of heating the gel usually happens so quickly in the microwave oven and also incorporation of soluble species occurs faster under the microwave irradiation due to more mobility and higher solubility of silicate species. As discussed by many researchers [84,[89][90][91][92][93][94][95][96], there are many contributing factors that affect the SAPO-34 properties such as microwave heating power and time, reaction temperature, aging and crystallization time, H 2 O and template content which will be discussed thoroughly.…”

Section: Table 10mentioning

confidence: 99%

Different techniques and their effective parameters in nano SAPO-34 synthesis: A review

et al. 2016

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“…In zeolite crystallization process, the role of water in the synthetic system has been well known to be important as the solvent [21][22][23]. To study the effect of water content on the morphology of SAPO-34 crystals, the H 2 O/Al 2 O 3 molar ratio was adjusted from 30 to 120 in the reaction mixture of 1.0 Al(OPr i ) 3 (Fig.…”

Section: Effect Of the H 2 O/al 2 O 3 Ratiomentioning

confidence: 99%

Fabrication of SAPO-34 Crystals with Different Morphologies by Microwave Heating

Song

Sharma

et al. 2010

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The crystal size and shape of the silicoaluminophosphate molecular sieve SAPO-34 have been effectively controlled in the reaction system of Al 2 O 3 -P 2 O 5 -SiO 2 -TEAOH-H 2 O under microwave radiations. Nano sheet-like SAPO-34 crystals are obtained when using colloidal silica as the silica source. When TEOS is used as the source of silica, homogeneous SAPO-34 crystals with a particle size of about 100 nm are formed, and the morphology of the crystals changes from uniform nano particles (*100 nm) to microspheres (*1.5 lm) by varying the H 2 O/Al 2 O 3 molar ratio. To further investigate the morphology control of SAPO-34, the synthetic factors, such as the silica source, water content, crystallization time and aging time have been studied in detail.

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Influencing factors on rapid crystallization of high silica nano-sized zeolite Y without organic template under atmospheric pressure

Cited by 44 publications

References 18 publications

Morphology-Controlled Synthesis of Zeolite and Physicochemical Properties

Morphology-Controlled Synthesis of Zeolite and Physicochemical Properties

Different techniques and their effective parameters in nano SAPO-34 synthesis: A review

Fabrication of SAPO-34 Crystals with Different Morphologies by Microwave Heating

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