Synthesis of stable Ti-containing mesoporous tubular membrane using silicalite-1 nanoparticles as seeds

Wang, Xiaobin; Meng, Bo; Zhang, Xiongfu; Tan, Xiaoyao; Liu, Shaomin

doi:10.1016/j.cej.2014.06.051

Cited by 5 publications

(4 citation statements)

References 53 publications

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“…Morphology and size of the seeded crystals had a great influence on the growth and performance of the zeolite membrane by secondary hydrothermal synthesis [19,25]. The TS-1 zeolite membranes (M-3, M-4, M-5, and M-6, Table 2) were prepared with different morphology and size TS-1 zeolites (Z-3, Z-4, Z-5, and Z-6, Table 1).…”

Section: Effect Of Seed Crystals Morphologymentioning

confidence: 99%

“…Compact and good catalytic performance TS-1 membranes have been successfully prepared by in-situ or secondary growth hydrothermal synthesis [13][14][15]. Secondary growth hydrothermal synthesis, a layer of seeded zeolites is coated on suitable support before crystallization, which is an effective way for shortening the crystallization time and preparing high-quality zeolite membranes [16][17][18][19][20]. In addition, the secondary growth could suppress the transformation from nucleation to other phase crystals.…”

Section: Introductionmentioning

confidence: 99%

“…Liu et al synthesized the highly oriented, thin, and hierarchically porous TS-1 zeolite membrane by secondary hydrothermal treatment [18]. Wang et al synthesized the Ti-containing membrane using nanosized silicalite-1 particles as seeds by hydrothermal treatment; the membranes showed large proportions of tetrahedrally coordinated titanium and excellent hydrothermally stability [19].…”

Section: Introductionmentioning

confidence: 99%

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Effects of Seed Crystals on the Growth and Catalytic Performance of TS-1 Zeolite Membranes

Ding

Xiang

et al. 2020

Membranes

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Dense and good catalytic performance TS-1 zeolite membranes were rapidly prepared on porous mullite support by secondary hydrothermal synthesis. The properties of seed crystals were very important for the preparation of high-catalytic performance TS-1 zeolite membranes. Influences of seed crystals (Ti/Si ratios, size, morphology, and zeolites concentration of the seed suspension) on the growth and catalytic property of TS-1 zeolite membranes were investigated in details. High Ti/Si ratio, medium-size, and morphology of the seed crystals were critical for preparing the high-performance TS-1 zeolite membrane. Compared with the bi-layer TS-1 zeolite membrane (inner and outer of the mullite tube), the mono-layer TS-1 zeolite membrane had a better catalytic performance for Isopropanol IPA oxidation with H2O2. When the Ti/Si ratio, size, and morphology of the TS-1 zeolites were 0.030, 300 nm, ellipsoid, and the zeolites concentration of the seed suspension was 5%, the IPA conversion, and flux through the TS-1 zeolite membrane were 98.23% and 2.58 kg·m−2·h−1, respectively.

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Section: Effect Of Seed Crystals Morphologymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of Seed Crystals on the Growth and Catalytic Performance of TS-1 Zeolite Membranes

Ding

Xiang

et al. 2020

Membranes

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“…What is more, with an increase in the reaction time, the selectivity of propylene oxide decreased dramatically . Meng et al immobilized TS-1 particles on the mullite using the secondary synthesis method. − However, the complex operation and the pretreatments for the secondary synthesis process required huge costs and a long synthesis duration. Liu et al − used a mechanical mixing method to prepare TS-1/diatomite.…”

Section: Introductionmentioning

confidence: 99%

Ultrastrong Interaction and High Dispersibility of TS-1 on Polymer-Modified Carbon Nanotubes/Nickel Foam

Zhang

Fang

Kong

et al. 2019

Ind. Eng. Chem. Res.

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In this paper, monolithic TS-1 (a zeolitic material containing both silicon and titanium) was successfully synthesized on polymer-modified carbon nanotubes/nickel foam (PMTS-1). PMTS-1 had high surface areas and aggregated pores (confined pores formed in an aggregated structure), and TS-1 could be evenly dispersed on the surface, which could facilitate reactant transport and improve dispersibility of TS-1. TS-1 strongly interacted with the polymer-modified CNTs/NF and is highly dispersed because the PDDAmodification could enhance the positivity of CNTs/NF. PMTS-1 was beneficial to the adsorption of the reactant propylene and the desorption of the product propylene oxide, which reduced the side reaction of the deep oxidation of propylene oxide, pore blocking, and coke formation. Also, the adsorption capacity of PMTS-1 to H 2 O 2 was enhanced, which created a microenvironment conducive to the forward reaction. After the reaction, PMTS-1 was easily separated from the reactants, which offered an economical application prospect.

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Influence of silicalite-1 nanoparticle seeds on the synthesis of Ti-containing mesoporous zeolites

Wang

Sun

Meng

et al. 2016

Chemical Engineering Journal

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Synthesis of stable Ti-containing mesoporous tubular membrane using silicalite-1 nanoparticles as seeds

Cited by 5 publications

References 53 publications

Effects of Seed Crystals on the Growth and Catalytic Performance of TS-1 Zeolite Membranes

Effects of Seed Crystals on the Growth and Catalytic Performance of TS-1 Zeolite Membranes

Ultrastrong Interaction and High Dispersibility of TS-1 on Polymer-Modified Carbon Nanotubes/Nickel Foam

Influence of silicalite-1 nanoparticle seeds on the synthesis of Ti-containing mesoporous zeolites

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