Mesoporous silica materials modified with alumina polycations as catalysts for the synthesis of dimethyl ether from methanol

Macina, Daniel; Piwowarska, Zofia; Tarach, Karolina A.; Góra‐Marek, Kinga; Ryczkowski, J.; Chmielarz, Lucjan

doi:10.1016/j.materresbull.2015.11.018

Cited by 39 publications

(27 citation statements)

References 46 publications

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“…Sulfonic acid mesoporous SBA-15 catalyst as a type of excellent and efficient Brønsted acid catalyst has been applied in different elds such as ethylene polymerization, 19,20 biodiesel synthesis, 21,22 bio-oil upgrading, 23 fatty acid esterication, [24][25][26] glycerol acetylation, 27 and dimethyl ether synthesis. 28 In our previous research, we synthesized a series of mesoporous Al-SBA-15 molecular sieves with different Si/Al ratios and investigated the inuences of acid strength, acid amount, acid type, and pore sizes on the PODE n synthesis. 29 In this study, as a continuation of our previous study, a series of sulfonic acidfunctionalized mesoporous SBA-15 with different sulfur loading were synthesized by a post-synthesis method.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of polyoxymethylene dimethyl ethers catalyzed by sulfonic acid-functionalized mesoporous SBA-15

et al. 2017

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Section: Introductionmentioning

confidence: 99%

Synthesis of polyoxymethylene dimethyl ethers catalyzed by sulfonic acid-functionalized mesoporous SBA-15

et al. 2017

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“…The synthesized silicas' thermal stability was evaluated, using TGA analysis. The results demonstrate that both MCF and SBA-15 nanoparticles showed only a slight mass loss in the range of temperature of 40-100 °C which corresponds to the removal of the absorbed humidity (Figure 3) [44]. The weight loss recorded at this stage, was about 4% and 6% for MCF and SBA-15 nanoparticles, respectively.…”

Section: Porositymentioning

confidence: 83%

Bottom-Up Development of Nanoimprinted PLLA Composite Films with Enhanced Antibacterial Properties for Smart Packaging Applications

et al. 2021

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In this work, polymer nanocomposite films based on poly(L-lactic acid) (PLLA) were reinforced with mesoporous silica nanoparticles, mesoporous cellular foam (MCF) and Santa Barbara amorphous-15 (SBA). PLLA is a biobased aliphatic polyester, that possesses excellent thermomechanical properties, and has already been commercialized for packaging applications. The aim was to utilize nanoparticles that have already been established as nanocarriers to enhance the mechanical and thermal properties of PLLA. Since the introduction of antibacterial properties has become an emerging trend in packaging applications, to achieve an effective antimicrobial activity, micro/nano 3D micropillars decorated with cone- and needle-shaped nanostructures were implemented on the surface of the films by means of thermal nanoimprint lithography (t-NIL), a novel and feasible fabrication technique with multiple industrial applications. The materials were characterized regarding their composition and crystallinity using Fourier transform infrared spectroscopy (FT-IR) and X-ray diffraction (XRD), respectively, and their thermal properties using differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). Their mechanical properties were examined by the nanoindentation technique, while the films’ antimicrobial activity against the bacteria Escherichia coli and Staphylococcus aureus strains was tested in vitro. The results demonstrated the successful production of nanocomposite PLLA films, which exhibited improved mechanical and thermal properties compared to the pristine material, as well as notable antibacterial activity, setting new groundwork for the potential development of biobased smart packaging materials.

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“…This ultimately decreases the diffusion path length of the adsorbent [5]. In addition, gradual uptake of Pb 2+ ion (49 %) was recorded at initial 10 minutes is due to the quick saturation of all empty active sites [1] and rapid diffusion of lead ions may accelerate the affinity of adsorbent to remove lead at initial time but quick decline after 10 minutes till 20 minutes is attributed to the surface coverage of alumino-silicate-Ti adsorbent results in the formation of metal complexes [10] (see Fig. 5.b) Comparative adsorption studies of alumino-silicates-Ti with both metals (lead and mercury) suggest Accordingly it can be found that regular incline is observed for the removal of mercury as compared to lead.…”

Section: Batch Adsorption Experimentsmentioning

confidence: 98%

Synthesis of alumino-silicates functionalized titanium as potential adsorbent: An industrial possibility

Tariq¹,

Rafique²,

Yaqoob³

2017

Epitoanyag - JSBCM

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nowadays different industrial sectors are highly contributing towards the discharge of heavy metal in various environmental compartments and it is one of the foremost environmental concerns due to their high toxicity and destructive impacts impact on human health. the effluents discharge from paint and leather industries usually contain considerable amount of lead and mercury which ultimately accumulates along the food chain and causes severe damage to the nervous system. various conventional methods have been reported in past for removing heavy metal ions such as chemical precipitation, electrochemical deposition, solvent extraction, and adsorption. Among these, adsorption is of immense importance because is effective and economical mean for environmental remediation. in past adsorption studies have focused on the development and application of different materials such as silica, titanium, vanadium, alumina, aluminosilicates, chitosan, starch and cyclodextrin. currently designing of aluminosilicate based materials gain wide acceptance in multidisciplinary research areas due to their distinctive properties such as high surface area, pore volume and low operational cost. in addition to these characteristic features, the application of these materials are limited due to the lack of ion exchange ability which restricts the mobility of metals during adsorption phenomenon the present study was design to functionalize aluminosilicates with titanium chloride in order to enhance its ion exchange properties and ability to reduce harmful state of toxic metals for instance, Hg (ii). the designed materials were subjected to different spectroscopic and quantitative techniques such as fourier transform infrared spectrometry, scanning electron microscopy, X-ray diffractometry. the objective of present research is to prepare aluminosilicate-ti chloride by adapting simple sol-gel protocol and its functionalization with titanium chloride with simple mixing method. the synthesized material was applied adsorbent for entrapping different toxic pollutants such as mercury and lead. the formation of alumino-silicates-ti material is confirmed by the presence of distinctive ir peak at 990 cm-1.scanning electron microscopy of synthesized product reveals the microstructures with small void spaces. the X-ray diffractometry (XrD) pattern reflects the amorphous behaviour of synthesized material due to the modification of aluminosilicate with titanium chloride.

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Mesoporous silica materials modified with alumina polycations as catalysts for the synthesis of dimethyl ether from methanol

Cited by 39 publications

References 46 publications

Synthesis of polyoxymethylene dimethyl ethers catalyzed by sulfonic acid-functionalized mesoporous SBA-15

Synthesis of polyoxymethylene dimethyl ethers catalyzed by sulfonic acid-functionalized mesoporous SBA-15

Bottom-Up Development of Nanoimprinted PLLA Composite Films with Enhanced Antibacterial Properties for Smart Packaging Applications

Synthesis of alumino-silicates functionalized titanium as potential adsorbent: An industrial possibility

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