Enhanced catalytic performance of molybdenum-doped mesoporous SBA-15 for metathesis of 1-butene and ethene to propene

Lin, Chao; Tao, Kai; Yu, Hongbo; Hua, Ding; Zhou, Shenghu

doi:10.1039/c4cy00652f

Cited by 52 publications

(30 citation statements)

References 41 publications

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“…[27,28]. Accordingly, the low-angle XRD results implied that the 2D hexagonal mesostructure of SBA-15 silica was virtually maintained in the functionalized SBA-15 samples after undergoing the organic sulfonation processes, which was consistent with the N 2 adsorption-desorption isotherms [29]. The integrity of the structure of the SBA-15 catalyst and compared SBA-15 support was illustrated by the high-angle XRD in the 2theta range of 10°-80°.…”

Section: Catalyst Characterizationsupporting

confidence: 76%

Efficient Production of Medium-Chain Structured Phospholipids over Mesoporous Organosulfonic Acid-Functionalized SBA-15 Catalysts

et al. 2019

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It is highly desirable that efficient recoverable heterogeneous catalysts should be developed to replace the costly biocatalysts used in producing structured phospholipids (SPLs) with medium-chain fatty acids (MCFAs). Thus, mesoporous propyl and phenyl sulfonic acid-functionalized SBA-15 materials synthesized via surface modification methods were investigated for the soybean lecithin interesterification with methyl caprate or caprylate. The physicochemical properties of the synthesized solid acids were deeply studied by small-angle X-ray diffraction, scanning electron microscopy, transmission electron microscopy, Fourier transform infrared and pyridine adsorption, etc. to build the possible structure-performance relationships. The results revealed that amounts of organosulfonic acid groups were successfully grafted onto the SBA-15 support, and most of the surface acid sites contained in the as-prepared organic-inorganic hybrid samples were assigned as strong Brönsted acid sites. Notably, the functionalized SBA-15 materials exhibited promising catalytic behaviors in producing MCFA-enriched SPLs under mild conditions (40 • C, 6 h) when compared with commercial Amberlyst-15 and typical phospholipases or lipases, mostly due to their high surface area, ordered structure and adequate Brönsted acid sites. Besides, the as-prepared materials could be easily recycled five times without obvious deactivation. This work might shed light on alternative catalysts for SPL production instead of the costly enzymes.

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Section: Catalyst Characterizationsupporting

confidence: 76%

Efficient Production of Medium-Chain Structured Phospholipids over Mesoporous Organosulfonic Acid-Functionalized SBA-15 Catalysts

et al. 2019

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“…These M‐MSNs resulting from the synthetic advances enable control over their composition, size, and morphology. Various metal species incorporated into the mesoporous silica frameworks include aluminum (Al), bismuth (Bi), cerium (Ce), chromium (Cr), cobalt (Co), copper (Cu), gadolinium (Gd), gallium (Ga),16a,23 gold (Au), indium (In), iridium (Ir), iron (Fe), manganese (Mn), molybdenum (Mo), nickel (Ni), palladium (Pd),21b,24,26,31 platinum (Pt),4n,14b,26,32 rhodium (Rh),26,32b rhuthenium (Ru), silver (Ag),14b,28b titanium (Ti),14c Zinc (Zn), Zirconium (Zr), and their respective oxides [aluminium oxide (Al 2 O 3 ), cadmium oxide (CdO), cerium oxide (CeO 2 ),27c cobalt(II) oxide/cobaltous oxide (CoO),20a,37 cobalt (II,III) oxide (Co 3 O 4 ),20a,38 cobalt(III) oxide/ cobaltic oxide (Co 2 O 3 ), chromium(III) oxide (Cr 2 O 3 ), copper oxide (CuO), ferric oxide (Fe 2 O 3 ), ferrous oxide (Fe 3 O 4 ), indium oxide (In 2 O 3 ), magnesium oxide (MgO), manganese oxide (Mn 3 O 4 ), manganese dioxide (MnO 2 ), molybdenum dioxide (MoO 2 ), molybdenum trioxide (MoO 3 ) nickel oxide (NiO),30a,48 palladium oxide (PdO),16a titanium dioxide (TiO 2 ),28b,34,49 vanadium oxide, zinc oxide (ZnO),], sulfides [cadmium sulfide (CdS), zinc sulfide (ZnS)],…”

Section: Impact Of Metals On Msnsmentioning

confidence: 99%

Metal Species–Encapsulated Mesoporous Silica Nanoparticles: Current Advancements and Latest Breakthroughs

Kankala

Zhang

Liu

et al. 2019

Adv Funct Materials

135

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Despite their advantageous morphological attributes and attractive physicochemical properties, mesoporous silica nanoparticles (MSNs) are merely supported as carriers or vectors for a reason. Incorporating various metal species in the confined nanospaces of MSNs (M-MSNs) significantly enriches their mesoporous architecture and diverse functionalities, bringing exciting potentials to this burgeoning field of research. These incorporated guest species offer enormous benefits to the MSN hosts concerning the reduction of their eventual size and the enhancement of their performance and stability, among other benefits. Substantially, the guest species act through contributing to reduced aggregation, augmented durability, ease of long-term storage, and reduced toxicity, attributes that are of particular interest in diverse fields of biomedicine. In this review, the first aim is to discuss the current advancements and latest breakthroughs in the fabrication of M-MSNs, emphasizing the pros and cons, the confinement of various metal species in the nanospaces of MSNs, and various factors influencing the encapsulation of metal species in MSNs. Further, an emphasis on potential applications of M-MSNs in various fields, including in adsorption, catalysis, photoluminescence, and biomedicine, among others, along with a set of examples is provided. Finally, the advances in M-MSNs with perspectives are summarized.(2-5 nm), tunable sizes (50-150 nm), shapes (hexagonal, wormhole-like, cubic, and lamellar) and morphologies (spheres, helical fibers, tubules, gyroids, crystals, and numerous other hierarchical complex architectures), ease of surface functionalization (both interior as well as exterior), unique topology, colloidal and thermal stabilities, and high dispersity. [4] The exceptional topology of surfactant-templated MSNs makes them unique with desirable properties that can be obtained by controlling the preparation conditions, such as the reaction temperature, pH value, stirring speed, and type of silica source, as well as surfactant, among others. [4j,m,n,5] These advantages make the MSNs as versatile materials and ideal choice for catalysis, [6] adsorption, [7] optical devices, [4j] polymeric fillers, [8] and diverse biomedical applications including bio-imaging, [4r,t,u,9] biocatalysts, [10] biosensing, [11] tissue engineering, [4f ] and drug/ gene delivery accounting for targeted and controlled release systems. [3d,4i,o-t,v,12] With these significant advantages and attractive physicochemical properties, it is highly anticipated to harness the desirable and beneficial properties of MSNs through the incorporation of various metals and their respective conjugates for exploration in innovative applications with exceptional performance. [13] The encapsulated metal species in the confined nanospaces of MSNs (M-MSNs) not only significantly enrich the mesoporous architecture and functionalities of MSN, but also tend to overcome their intrinsic limitations, such as their poor suspension ability and stability, lack of intrig...

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“…23 Mesoporous materials, such as HMS, SBA-15, MCM-41, and FDU-12, have uniform pores, large BET surface areas and pore volumes, which are benecial for the dispersion of active species and the transportation of reactants and products. [24][25][26][27][28][29] Thus, mesoporous materials have been considered as promising catalyst supports in olens metathesis.…”

Section: Introductionmentioning

confidence: 99%

Remarkably enhanced performance of the metathesis reaction of ethylene and 1-butene to propene using one-step prepared W-MCM-41 catalysts

et al. 2019

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Enhanced catalytic performance of molybdenum-doped mesoporous SBA-15 for metathesis of 1-butene and ethene to propene

Cited by 52 publications

References 41 publications

Efficient Production of Medium-Chain Structured Phospholipids over Mesoporous Organosulfonic Acid-Functionalized SBA-15 Catalysts

Efficient Production of Medium-Chain Structured Phospholipids over Mesoporous Organosulfonic Acid-Functionalized SBA-15 Catalysts

Metal Species–Encapsulated Mesoporous Silica Nanoparticles: Current Advancements and Latest Breakthroughs

Remarkably enhanced performance of the metathesis reaction of ethylene and 1-butene to propene using one-step prepared W-MCM-41 catalysts

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