The study of ferrierite zeolite synthesized by using silica sol modified by HCl as silica source for the skeletal isomerization reaction of 1-butene

2021 ◽  
Author(s):  
Guoliang Wu ◽  
Yunfeng Hu ◽  
Qiang Bao ◽  
Jian Zhang ◽  
Yueyuan Wang ◽  
...  
Keyword(s):  
Silica Sol ◽  
Skeletal Isomerization ◽  
Isomerization Reaction ◽  
Silica Source

Catalytic Activity of ZSM-22 Zeolites in the Skeletal Isomerization Reaction of 1-Butene

1997 ◽  
Vol 36 (8) ◽  
pp. 2990-2995 ◽  
Author(s):  
Rune Byggningsbacka ◽  
Lars-Eric Lindfors ◽  
Narendra Kumar
Keyword(s):  
Catalytic Activity ◽  
Skeletal Isomerization ◽  
Isomerization Reaction

Effect of Different Silica Source on NaA Nanocrystal

2013 ◽  
Vol 328 ◽  
pp. 659-663
Author(s):  
Pu Bai ◽  
Yan Na Liu ◽  
Zhao Shu Zhang ◽  
Yan Lin Sun
Keyword(s):  
Particle Size ◽  
Silica Sol ◽  
Silica Source ◽  
Significant Difference

Effect of different silica source on the products of NaA nanocrystal was studied. The crystallinity, Si/Al and morphology of samples were characterized by XRD, EDX and SEM. The results showed that the samples using different silica sources have significant difference. The sample using silica sol as silica source have a better crystallinity with Si/Al ratio 1.37 and the particle size were between 100 to 500nm; The sample using TEOS as silica source have a less crystallinity with Si/Al ratio 1.15 and the particle size were between 50 to 120nm.

Environmental Sustainability through Recycling Incineration Bottom Ash for the Production of Autoclaved Aerated Concrete

2015 ◽  
Vol 650 ◽  
pp. 51-70 ◽  
Author(s):  
En Hua Yang ◽  
Yi Quan Liu ◽  
Zhi Tao Chen
Keyword(s):  
Aluminum Powder ◽  
Environmental Sustainability ◽  
Pure Aluminum ◽  
Bottom Ash ◽  
Waste Incineration ◽  
Gas Generation ◽  
Autoclaved Aerated Concrete ◽  
Silica Source ◽  
Aerated Concrete ◽  
Aeration Capacity

Municipal solid waste incineration bottom ash (IBA) has great potential to be utilized for civil engineering applications. This paper is to investigate the characteristic of gas generation from IBA and to study the potential of IBA as aerating agent to replace costly aluminum powder and as silica source to partially replace silica flour/fly ash in the production of autoclaved aerated concrete (AAC). Results show the aeration capacity of IBA used in this study is about 1% that of pure aluminum powder by mass. Finer particles, higher alkali molarity, and higher reaction temperature encourage the reaction and more gas is generated per gram of IBA. Type of alkaline solution does not seem to be an important factor for gas generation from IBA. Several exemplary lightweight mortars and AACs were produced by incorporating IBA as aerating agent. It is highly plausible IBA can be used as aerating agent to replace pure aluminum powder in the production of normal aerated concrete. IBA-AACs with density ranging from 600 to 800 kg/m3 were successfully synthesized by using IBA as aerating agent. For a given density, the compressive strength of IBA-AAC is higher than that of AAC due to the formation of more uniform pore structure with smaller pore size in IBA-AAC.

Influence characteristics and mechanism of fragmental size of broken coal mass on the injection regularity of silica sol grouting

2021 ◽  
Vol 269 ◽  
pp. 121251
Author(s):  
Dongjiang Pan ◽  
Kairong Hong ◽  
Helin Fu ◽  
Jianjun Zhou ◽  
Nong Zhang ◽  
...  
Keyword(s):  
Silica Sol ◽  
Coal Mass ◽  
Broken Coal Mass

scholarly journals A simple approach to prepare fluorescent molecularly imprinted nanoparticles

RSC Advances ◽  
2021 ◽  
Vol 11 (13) ◽  
pp. 7732-7737
Author(s):  
Fenying Wang ◽  
Dan Wang ◽  
Tingting Wang ◽  
Yu Jin ◽  
Baoping Ling ◽  
...  
Keyword(s):  
High Performance ◽  
Low Cost ◽  
Sol Gel ◽  
Silica Sol ◽  
Simple Approach ◽  
Imprinted Polymer ◽  
Molecularly Imprinted ◽  
Low Toxicity ◽  
Good Biocompatibility ◽  
Molecularly Imprinted Nanoparticles

Fluorescent molecularly imprinted polymer (FMIP) gains great attention in many fields due to their low cost, good biocompatibility and low toxicity. Here, a high-performance FMIP was prepared based on the autocatalytic silica sol–gel reaction.

scholarly journals Performance characterization and application of composite adsorbent LiCl@ACFF for moisture harvesting

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
X. Y. Liu ◽  
W. W. Wang ◽  
S. T. Xie ◽  
Q. W. Pan
Keyword(s):  
Water Uptake ◽  
Vital Role ◽  
Silica Sol ◽  
Activated Carbon Fiber ◽  
Low Grade ◽  
Human Society ◽  
Water Harvesting ◽  
Energy Estimation ◽  
Carbon Fiber Felt ◽  
Global Threat

AbstractFreshwater scarcity is a global threat to modern era of human society. Sorption-based atmospheric water harvesting (AWH) is prospective to provide fresh water for remote water-stressed areas lacking in water and electricity. Adsorbent material plays a vital role in such AWH systems. Here, we report a solid adsorbent synthesized by impregnating hygroscopic salt lithium chloride (LiCl) into solidified activated carbon fiber felt (ACFF modified by silica sol). Composite samples immersed with different mass concentrations of silica sol are prepared and characterized for dynamic water uptake, equilibrium water uptake, textural and thermal properties. AS5Li30 (ACFF + 5 wt% silica gel + 30 wt% LiCl) exhibits an efficient water uptake of 2.1 g/g at 25 °C and 70% relative humidity (RH). The material further demonstrates a heat storage capacity of 5456 kJ/kg. Its low regeneration temperature (< 80 °C) and good cycle stability make it feasible to be used in practical water production applications, driven by solar energy and other low-grade energy. Estimation results show that water harvesting unit can produce 1.41 gH2O/gAS5Li30 under 25 °C and 75% RH.

scholarly journals Facile Preparation of Mesoporous MCM-48 Containing Silver Nanoparticles with Fly Ash as Raw Materials for CO Catalytic Oxidation

Micromachines ◽  
2021 ◽  
Vol 12 (7) ◽  
pp. 841
Author(s):  
Dong Tian ◽  
Yonghong Chen ◽  
Xiaoyong Lu ◽  
Yihan Ling ◽  
Bin Lin
Keyword(s):  
Silver Nanoparticles ◽  
Fly Ash ◽  
Co Oxidation ◽  
Surface Composition ◽  
Raw Materials ◽  
Silica Source ◽  
Co Conversion ◽  
Co Catalytic Oxidation ◽  
Adsorption Desorption

An environmentally friendly method was proposed to prepare mesoporous Mobil Composition of Matter No.48 (MCM-48) using fly ash as the silica source. Silver nanoparticles were infiltrated on MCM-48 facilely by an in situ post-reduction method and evaluated as an effective catalyst for CO oxidation. The as-prepared MCM-48 and Ag/MCM-48 nanoparticles were characterized by XRD, N2 adsorption/desorption, and TEM. Investigations by means of XPS for Ag/MCM-48 were performed in order to illuminate the surface composition of the samples. Studies revealed the strong influence of the loading of Ag nanoparticles on catalysts in the oxidation of CO. CO conversion values for Ag/MCM-48 of 10% and 100% were achieved at temperatures of 220 °C and 270 °C, respectively, indicating that the Ag-decorated MCM-48 catalyst is extremely active for CO oxidation.

scholarly journals Isomerization of glucose to fructose catalyzed by metal-organic framework

2021 ◽  
Author(s):  
Marta Lara-Serrano ◽  
Silvia Morales-delaRosa ◽  
Jose M. Campos-Martin ◽  
Víctor Karim Abdelkader-Fernández ◽  
Luis Cunha-Silva ◽  
...  
Keyword(s):  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Isomerization Reaction ◽  
Metal Organic ◽  
Organic Framework

The isomerization reaction of glucose to fructose was studied using five selected metal-organic frameworks (MOFs) as catalysts and a mixture of γ-valerolactone and 10% H2O as the solvent. MOFs with...

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