1999
DOI: 10.1039/a901228a
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Nanosized zeolite crystals—convenient control of crystal size distribution by confined space synthesis

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Cited by 251 publications
(137 citation statements)
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“…Possible approaches are: to synthesize extra-large pore zeolites, [8][9][10][11][12], to decrease crystal size by direct synthesis [13][14][15][16][17][18][19] or by zeolite delamination [20], reducing in this way the length of the diffusion path. Another way of decreasing the length of the diffusion path is to generate mesopores in the zeolite crystals by means of carbon templating [21][22], by chemical or steam postsynthesis treatments [23] or by the use of supramolecular templating [24].…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…Possible approaches are: to synthesize extra-large pore zeolites, [8][9][10][11][12], to decrease crystal size by direct synthesis [13][14][15][16][17][18][19] or by zeolite delamination [20], reducing in this way the length of the diffusion path. Another way of decreasing the length of the diffusion path is to generate mesopores in the zeolite crystals by means of carbon templating [21][22], by chemical or steam postsynthesis treatments [23] or by the use of supramolecular templating [24].…”
Section: Introductionmentioning
confidence: 99%
“…In fact, the catalytic cracking industry alone represents more than 95%, with a maximum catalyst cost of 5$/Kg. The rest accounts for specialty zeolites (20)(21)(22)(23)(24)(25)(26)(27)(28)(29)(30), where the catalyst value depends not only on the zeolite synthesis and modifications, but also on the value of the final product [25][26].…”
Section: Introductionmentioning
confidence: 99%
“…[9][10][11][12][13][14][15][16][17][18][19] As metodologias de síntese mais bem sucedidas envolvem o uso de agentes geradores de mesoporosidade (agentes orgânicos e nanopartículas) ou nanomoldes (moldagem em nanoespaços), que geram sólidos com mesoporosidade intracristalina com uma estreita distribuição de tamanho de poros; isto resulta em sólidos contendo mesoporos, além dos microporos intrínsecos das zeólitas. Além disso, é gerada uma mesoporosidade intercristalina, resultante da aglomeração dos cristais de zeólita com tamanhos nanométricos.…”
Section: Introductionunclassified
“…[ [5][6] The in-situ synthesis of small zeolite crystals inside or outside porous silica gel [3] or carbon [4] has also been reported. However, the crystal properties, such as composition, size, and morphology, could not be controlled, because of the bimodal pore structure of the silica gel employed (average pore diameters of 25 and 1000 nm): depending on the pore diameter, crystals with diameters from 20-900 nm were found, largely blocking the porous host.…”
mentioning
confidence: 99%