Synthesis and Characterization of Sn, Ge, and Zr Isomorphous Substituted MFI Nanosheets for Glucose Isomerization to Fructose

Dugkhuntod, Pannida; Maineawklang, Narasiri; Rodaum, Chadatip; Pornsetmetakul, Peerapol; Saenluang, Kachaporn; Salakhum, Saros; Wattanakit, Chularat

doi:10.1002/cplu.202100289

Cited by 10 publications

(11 citation statements)

References 62 publications

(15 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…After desilication followed by dealumination of H−Z, ZS 180 A 15 showed decreased acid sites (66 μmol g −1 ) with a reduced strength of acidic sites (T max =380 °C) due to the predominant contribution by the hydroxyl groups generated by the acid and base treatment. Interestingly, after incorporating Sn, Sn 4 ZS 180 A 15 further shifted towards lower temperature with a T max of 300 °C corresponding to weak‐medium, indicating suppression of strong Bronsted acid sites by replacing them with Lewis Sn sites which could efficiently catalyse glucose isomerisation [28a] . The NH 3 ‐TPD profiles and acidic sites of other modified H−Z zeolites with varied desilication and dealumination times are shown in Figures S5b and c and Table S2.…”

Section: Resultsmentioning

confidence: 99%

“…Sn 4 ZS 180 A 15 displayed a doublet corresponding to Sn3d 3/2 and Sn3d 5/2 at a binding energy of 495.8 eV and 487.4 eV, respectively, due to the incorporation of Sn into the framework (Figure 4). After deconvolution, the Sn3d 5/2 spectrum of Sn 4 ZS 180 A 15 exhibited three peaks corresponding to tetrahedral framework Sn sites (79 %), octahedral Sn (extra framework; 16 %), and metallic Sn (5 %), [28a–d] inferring the Sn located mainly in the framework, thus playing a pivotal role in catalysing glucose isomerisation. Further, the formation of metallic Sn could be due to the reduction of Sn species by the unidentifiable reductant(s) during calcination.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Enhanced Catalytic Activity of Modified ZSM‐5 Towards Glucose Isomerization to Fructose

2023

View full text Add to dashboard Cite

The present study focuses on generating mesopores within HÀ ZSM-5 (HÀ Z) zeolite via desilication and dealumination to incorporate Lewis acidic metal, such as Sn, into the framework (Sn 4 ZS 180 A 15 ) to catalyse glucose isomerisation. Sn 4 ZS 180 A 15 possesses enhanced surface area (457 m 2 g À 1 ), mesopore volume (0.585 cm 3 g À 1 ) and a high weak-medium to strong acidic sites ratio, compared to parent HÀ Z (395 m 2 g À 1 ; 0.174 cm 3 g À 1 ). DRS-UV-Vis and XPS results corroborate Sn incorporation into the framework of Sn 4 ZS 180 A 15 , based on the absorbance peak around 200-220 nm and peaks appearing at 495.8 and 487.4 eV, respectively. Sn 4 ZS 180 A 15 exhibits higher catalytic activity towards glucose isomerisation in ethanolÀ water at 110 °C, yielding 44.2 % fructose with 80.0 % selectivity. Conversely, the parent HÀ Z afforded negligible glucose conversion with a fructose yield of < 1 % under identical conditions. Moreover, Sn-incorporated on dealuminated (Sn 4 ZS 0 A 15 ) and desilicated (Sn 4 ZS 180 A 0 ) catalysts give a low yield of fructose (7-10 %), signifying the requirement of the desilication-dealumination process before incorporating Sn into the framework.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Enhanced Catalytic Activity of Modified ZSM‐5 Towards Glucose Isomerization to Fructose

2023

View full text Add to dashboard Cite

show abstract

“…Isomorphous substitution of heteroatoms (Ti, Fe, Zr, B, Sn, Ge) is an effective platform for finely tuning the pore chemistry, pore structure, particle size, and surface properties such as hydrophobicity/hydrophilicity by manipulating the T−O−T angles and T−O length (T=Si or heteroatoms) of the zeolite framework for their effective utilization as catalysts, adsorbents, and membranes [9–11] . Previously, our group had fabricated different isomorphous substituted heteroatoms zeolite membranes such as B‐ZSM‐5, [12] B‐ZSM‐11, [13] and Sn‐ZSM‐5 [14] to separate organics from organic‐water mixtures.…”

Section: Methodsmentioning

confidence: 99%

Fabrication of Isomorphously Substituted W‐MFI Membrane with High Performance for Ethanol Separation from Water

Saulat

Yang

Song

et al. 2022

Chemistry An Asian Journal

View full text Add to dashboard Cite

Isomorphous substitution of heteroatoms is an effective platform for finely tuning the pore chemistry, pore structure, and surface properties of the zeolite framework as catalysts or separation membranes. A continuous and compact isomorphously substituted tungsten (W)-MFI membrane was firstly developed on coarse α-Al 2 O 3 tube dipcoated with W-MFI seeds using hydrothermal secondary growth and pretreated synthesis solution. The synthesized W-MFI membrane is found to be ethanol permselective having a pervaporation based separation factor and flux of 69 and 2.50 kg/m 2 h, respectively while exhibiting the highest separation index of 170 kg/m 2 h for the separation of 5 wt% ethanol-water mixture among the reported heteroatoms substituted and α-Al 2 O 3 supported tubular MFI membranes. The isomorphous substitution of W improves the hydrophobicity and also plays a significant role for the enhanced separation performance.

show abstract

“…The Sn-silicalite-1 zeolite was synthesized by a simple method with the aid of tetrabutylammonium hydroxide (TBAOH) as an organic template adapted from the previous literature. 50 Typically, TEOS and TBAOH were homogeneously mixed in the sodium hydroxide solution. Afterward, SnCl 4 was added into the mixture under vigorous stirring at room temperature.…”

Section: Methodsmentioning

confidence: 99%

Nanoporous Sn-Substituted ZSM-48 Nanostructures for Glucose Isomerization

Saenluang

Srisuwanno

Salakhum

et al. 2021

ACS Appl. Nano Mater.

Self Cite

View full text Add to dashboard Cite

The hierarchical Sn-substituted ZSM-48 nanostructures (Sn-Si/ZSM-48) have been successfully fabricated via a one-pot hydrothermal process with the aid of cyclic diquaternary ammonium (CDM) as structure-directing agent (SDA) and amorphous Sn-Si nanobeads as starting materials. The physicochemical properties of all the prepared materials were characterized by means of X-ray diffraction (XRD), energy dispersive X-ray (EDS) elemental analysis, scanning electron microscopy (SEM), transmission electron microscopy (TEM), N 2 adsorption/desorption, X-ray photoelectron spectroscopy (XPS), and UV−vis spectroscopy. Compared with using a traditional synthesis method, by using the simultaneous presence of Sn and Si species in nanobeads, the homogeneous distribution of Sn along the ZSM-48 crystals could be observed with the high fraction of tetrahedral Sn located in the zeolite framework. The Sn-Si/ZSM-48 demonstrates that the use of Sn-Si nanobeads is advantageous in terms of improving the crystallization and dissolution rate of zeolites and providing uniform spherical morphology and high fraction of tetrahedral Sn in the framework. To illustrate the beneficial effect of synthesized materials, the Sn-Si/ZSM-48 remarkably enhances the catalytic performance in glucose conversion to fructose in terms of conversion (32.7%) and fructose selectivity (95.5%) in the mixed DMSO and water system. These findings open up the concept of preparation of hierarchical ZSM-48 with a one-dimensional porous system homogeneously incorporated with Sn as Lewis acid sites by using amorphous Sn−Si nanobeads for glucose upgrading applications.

show abstract

Synthesis and Characterization of Sn, Ge, and Zr Isomorphous Substituted MFI Nanosheets for Glucose Isomerization to Fructose

Cited by 10 publications

References 62 publications

Enhanced Catalytic Activity of Modified ZSM‐5 Towards Glucose Isomerization to Fructose

Enhanced Catalytic Activity of Modified ZSM‐5 Towards Glucose Isomerization to Fructose

Fabrication of Isomorphously Substituted W‐MFI Membrane with High Performance for Ethanol Separation from Water

Nanoporous Sn-Substituted ZSM-48 Nanostructures for Glucose Isomerization

Contact Info

Product

Resources

About