2017
DOI: 10.3390/catal7060168
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The Power of Non-Hydrolytic Sol-Gel Chemistry: A Review

Abstract: This review is devoted to non-hydrolytic sol-gel chemistry. During the last 25 years, non-hydrolytic sol-gel (NHSG) techniques were found to be attractive and versatile methods for the preparation of oxide materials. Compared to conventional hydrolytic approaches, the NHSG route allows reaction control at the atomic scale resulting in homogeneous and well defined products. Due to these features and the ability to design specific materials, the products of NHSG reactions have been used in many fields of applica… Show more

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Cited by 93 publications
(101 citation statements)
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References 227 publications
(428 reference statements)
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“…The sol–gel process is the most common method used to synthesise mesoporous oxides because it offers the possibility to obtain metastable phases, with control over composition, homogeneity and texture. Conventional sol–gel chemistry based on hydrolysis and condensation reactions naturally predominates, but non‐hydrolytic (or non‐aqueous) sol–gel (NHSG) chemistry has been found to provide simple and powerful alternative routes notably for the synthesis of mixed oxides, nanoparticles and mesoporous materials …”
Section: Introductionmentioning
confidence: 99%
“…The sol–gel process is the most common method used to synthesise mesoporous oxides because it offers the possibility to obtain metastable phases, with control over composition, homogeneity and texture. Conventional sol–gel chemistry based on hydrolysis and condensation reactions naturally predominates, but non‐hydrolytic (or non‐aqueous) sol–gel (NHSG) chemistry has been found to provide simple and powerful alternative routes notably for the synthesis of mixed oxides, nanoparticles and mesoporous materials …”
Section: Introductionmentioning
confidence: 99%
“…Non-hydrolytic sol-gel (NHSG) chemistry is a well-known technique for material synthesis and has been previously used for catalyst synthesis [28,29]. However, we have found limited use of sol-gel chemistry for the deposition of thin oxide films and its effect on catalysis.…”
Section: Introductionmentioning
confidence: 99%
“…Si CP ssNMR spectrum of pure SBA-15 (Fig. 3F) presented the 3 characteristic 29 Si resonances for bulk siloxanes (Q 4 ; @Si@; À111 ppm), silanols (Q 3 ; "SiOH; À100 ppm) and geminal silanols (Q 2 ; @Si(OH) 2 ; À90 ppm). After deposition of TiO 2 , the intensity of the Q 2 peak decreased due to the transformation of germinal silanols into silanols (@Si(OH)OTi) (Q 3 ), in agreement with 1 H NMR results.…”
mentioning
confidence: 99%
“…Aluminosilicate NPs were produced by a typical sol‐gel method. GLYMO and ATSB underwent hydrolysis and condensation reactions catalyzed by HCl, forming a crosslinked three‐dimensional network without long‐range order . KCl was added to balance the charge.…”
Section: Resultsmentioning
confidence: 99%
“…These highly porous calcined inorganic fibers containing residual carbon may display favorable characteristics, such as high electrical conductivity and high‐surface area, to be used as a catalyst . Typically, small diameter fiber‐shaped soft templates and sol‐gel derived materials have high‐surface area owing to the empty spaces provided by the template. Moreover, silicate materials prepared by the sol‐gel process usually display high‐surface areas, since the hydrolysis and condensation reactions in acidic conditions of the alkoxides lead to the formation of small fractal polymerized entities or colloids that eventually will merge to form a highly porous material.…”
Section: Resultsmentioning
confidence: 99%