Effect of the Type of Silicon Source on the Physicochemical and Catalytic Properties of Mesoporous Silicoaluminophosphate Molecular Sieves Full article
| Journal |
Petroleum Chemistry
ISSN: 0965-5441 , E-ISSN: 1531-8532 |
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| Output data | Year: 2016, Volume: 56, Number: 3, Pages: 244-252 Pages count : 9 DOI: 10.1134/S096554411603004X | ||||
| Tags | mechanism of incorporation of isomorphically substituting elements, SAPO-31, silicoaluminophosphates | ||||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | The Ministry of Education and Science of the Russian Federation | 14.613.21.0001 (RFMEFI61314X0001) |
Abstract:
Silicoaluminophosphates with the ATO structure have been synthesized using two types of silicon
source (metakaolin and silica sol). To determine the composition, morphology, and acid properties, SAPO
31 samples have been characterized by various methods. It has been found that the samples synthesized using
different silica sources have very different properties. Samples of SAPO31 synthesized with metakaolin have
a higher acidity and are more active in the catalytic hydroisomerization of ndecane as compared with their
counterparts prepared with silica sol. The difference in the effect of the type of silicon source has been
explained by morphological features of silica particles formed during the dissolution of silicon source (spher
ical particles of a ~10 nm size in the case of silica sol and nanoplates of a ~1 nm size in the case of metakaolin).
On the basis of data on the enhancement of acidic properties in the SAPO31 samples with an increase in sil
icon concentration therein, it has been doubted that the SM3 mechanism of incorporation of Si atoms into
the aluminophosphate ATO framework really operates (in any of its form). It has been shown that the SM2
mechanism alone operates instead, involving the independent formation of regions with an aluminosilicate
composition.
Cite:
Echevsky G.V.
, Weixing Q.
, Toktarev A.V.
, Wu W.
Effect of the Type of Silicon Source on the Physicochemical and Catalytic Properties of Mesoporous Silicoaluminophosphate Molecular Sieves
Petroleum Chemistry. 2016. V.56. N3. P.244-252. DOI: 10.1134/S096554411603004X WOS Scopus РИНЦ AN OpenAlex
Effect of the Type of Silicon Source on the Physicochemical and Catalytic Properties of Mesoporous Silicoaluminophosphate Molecular Sieves
Petroleum Chemistry. 2016. V.56. N3. P.244-252. DOI: 10.1134/S096554411603004X WOS Scopus РИНЦ AN OpenAlex
Original:
Ечевский Г.В.
, Weixing Q.
, Токтарев А.В.
, Wu W.
Влияние природы источника кремния на физико-химические и каталитические свойства среднепористых силикоалюмофосфатных молекулярных сит
Нефтехимия. 2016. Т.56. №3. С.262-270. DOI: 10.7868/S0028242116030047 РИНЦ OpenAlex
Влияние природы источника кремния на физико-химические и каталитические свойства среднепористых силикоалюмофосфатных молекулярных сит
Нефтехимия. 2016. Т.56. №3. С.262-270. DOI: 10.7868/S0028242116030047 РИНЦ OpenAlex
Dates:
| Submitted: | Nov 16, 2015 |
| Published print: | Mar 1, 2016 |
| Published online: | May 22, 2016 |
Identifiers:
| Web of science: | WOS:000376602600009 |
| Scopus: | 2-s2.0-84971260311 |
| Elibrary: | 27159833 |
| Chemical Abstracts: | 2016:861383 |
| OpenAlex: | W2408307749 |