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Silica source
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This study proposes a photonic crystal fiber made of fused silica glass, with the core infiltrated with chloroform as a new source of supercontinuum (SC) spectrum. We numerically study the guiding properties of the fiber structure in terms of characteristic dispersion and mode area of the fundamental mode.
9p
vispiderman
15-06-2023
5
1
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In this study we synthesized submicron silica powder from rice husk as an low-cost and renewable source and then incorporate metallic Cu onto it by using wet chemical reactions. The obtained material can be used in the future as potential catalyst for many organic reactions.
5p
vidoctorstrange
06-05-2023
3
2
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The formation process of zeolite A (Linde Type A) was monitored inline at 1.5 L scale by Photon Density Wave (PDW) spectroscopy as novel process analytical technology for highly turbid liquid suspensions.
6p
vironald
15-12-2022
8
3
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In the present work, a biosynthesis route for the preparation of hierarchical pompon-like SAPO-34 was developed. Commercially available bacterial cellulose aerogel was used as template. SiO2 loaded bacterial cellulose aerogel was used as silica source and a simple hydrothermal treatment was used for crystallization.
8p
vironald
15-12-2022
3
2
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In this work we present a synthesis strategy for the preparation of Stober-type ¨ mesoporous particles functionalized with inorganic species. The procedure is based on a combination of the Atrane and the Stober ¨ methods. Both as a source of silicon and of the incorporated heteroelements (Fe, Zn, Al, Ti) the corresponding atrane complexes are used as hydrolytic reagents.
14p
vironald
15-12-2022
4
2
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An environmentally friendly and inexpensive silica source, sodium silicate solution, was applied to synthesize a free-standing mesoporous silica film at the air/liquid interface, exploiting the co-assembly of cetyltrimethylammonium bromide and polyethylenimine.
11p
vironald
15-12-2022
12
2
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Synthesis of the ionic liquid 1-allyl-3-(4-methyl-7,8-dihydroxy-2H-chromen-2-one) benzimidazolium chloride followed by the conversion of ammonium salts on the imidazole ring hooked to the coumarin group was modified by postmodification of the silica matrix where 3-chloropropyltrimethoxysilane was used as not only a surface modification agent, but also as an ATRP halogen source. The synergetic effect of charged ammonium groups as well as hydroxyl groups present on the coumarin was investigated in terms of ATRP polymerization.
9p
langthannam
29-12-2021
6
0
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The present paper aimed at the investigation of the effect of preliminary acid treatment on the structure and purity of extracted silica. In this study, the acid leaching of rice husk (RH) in 2 M hydrochloric acid solution before the calcination process at 600◦C was proposed to achieve completely white silica with high specific surface area and low content of impurities. RH, selected from the Almaty Region, Kyzylorda Region, and Turkestan Region was used as the main silica source. The results confirmed that the highest purity (98.2%–99.
12p
tudichquannguyet
29-11-2021
8
1
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As a result, octave spanning of the SC spectrum was achieved in the wavelength range of near-IR from 1.25 µm to 2.3 µm with 90 fs pulse and energy of 1.5 nJ at a pump wavelength of 1.55 µm. The proposed fibers are fully compatible with all-silica fiber systems, in particular, could be used for all-fiber SC sources and new low-cost all-fiber optical systems.
10p
parasite
02-06-2021
11
1
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ZSM-5 zeolite material (Si/Al ratio = 25) was synthesized with silica source of TEOS and TPAOH template. The zeolite is modified into proton form (HZSM-5) with 343 m2 /g of BET surface area, 324 m2 /g of micropore area, 0.1491 cm3 /g of micropore volume and 5.77 nm of BJH adsorption average pore width. Zinc oxide and iron oxide are dispersed onto HZSM-5 catalyst surface with different contents by wet impregnation method. The results of HZSM-5, Zn/HZSM5, Fe/HZSM-5 catalyst materials still retain the micropore structure of ZSM-5 zeolite.
8p
cothumenhmong11
06-05-2021
21
1
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SiO2 and TiO2 sols were successfully synthesized by using sodium silicate and titanium chloride as Si and Ti sources. SiO2-TiO2 sol coated polyester/cotton fabric was fabricated by deepcoating method and using SiO2 , TiO2 sols as coating materials. SiO2 -TiO2 coated fabric were characterized by XRD, FTIR, TGA, SEM and EDX. From SEM image, it showed the SiO2, TiO2 particles of 20-30 nm which well deposited on fabric surface. TGA result revealed the significant improvement of thermal resistance and stability of SiO2-TiO2 coated fabric as compared to those of uncoated fabric.
8p
kequaidan11
07-04-2021
17
2
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In this study, zeolite-activated carbon composite (Z/AC) was synthesized by hydrothermal reaction using kaolin as a source of silica and alumina. The synthesized materials were characterized by Brunner-Emmet-Teller (BET) surface area to calculate surface area, X-ray diffraction (XRD) to study the crystal structure of materials, Infrared spectroscopy (IR) to indicate the presence of functional groups on the surface and scanning electron microscopy (SEM) to determine the morphology of the composites.
10p
cothumenhmong9
04-01-2021
36
2
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In this work, highly ordered mesoporous graphitic carbon (G-CMK3) has been prepared successfully by a nano-casting method using sucrose as carbon source, mesoporous silica as hard template, and soybean oil as surfactant. In the absence of soybean oil surfactant, the synthesized ordered mesoporous carbon material, CMK-3, revealed a low graphitization degree with a specific surface area of 1049.1 m2 /g and a high pore volume of 1.172 cm3 /g.
7p
nguathienthan9
08-12-2020
12
0
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The main cause for the death of insects due to fly ash application was wearing of mandibles and main feeding organs of insects which resulted in functionless mandibles so that the insects of paddy die without food. Further, the incidence of major insects was negatively correlated with yield. Application of fly ash as a source of silica and potassium with SSB, FYM with STBK reduced the incidence of Brown plant hopper, Green leaf hopper, Stem borer and increased the yield in rice.
7p
nguaconbaynhay7
15-08-2020
25
1
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An experiment was carried out in Kittur Rani Channamma College of Horticulture, Arabhavi, Karnataka to study the effect of silica (Diatomaceous earth) on physical and Biochemical characters of Guava. Diatomaceous earth is a source of silicon and it was applied after bahar treatment as whole basal application along with recommended dose of fertilizer.
6p
angicungduoc6
20-07-2020
10
1
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Ascorbic acid is one of the most important vitamins to monitor in dietary sources (juices and vitamins) and biological liquids.
8p
vijiraiya2711
27-05-2020
9
0
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Aim of our research study to find out efficient strains of K-solubilizing bacteria from potassium solubilizing isolates under in-vitro condition and different source of potassium minerals. The morpho-biochemical characterization and mica-K solubilization capacity of K-solubilizers bacterial in-vitro was done. Effect of K-solubilizing bacterial isolates on pH, EC soluble K and residual silica at 7, 14, 21 and 28 days after incubation in broth containing mica was studied.
10p
quenchua4
06-04-2020
24
0
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Rice husk is a potential source for renewable energy and silica. To extract the maximum amount of silica, usually the rice husk is treated with strong acids that burn the organic part leaving behind a black residue. In this research, sulfuric acid is used as an oxidizing agent. Efforts are focused to find out more about the behavior of acid-treated rice husk by using thermal exposure, and results are compared with results for raw rice husk which is thermally exposed but not acid treated.
5p
kequaidan1
16-11-2019
16
2
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The adsorption of phenol over MCM-41 prepared from rice husk silica was investigated. MCM-41 material (RH-MCM-41) was synthesized using sodium silicate prepared from rice husk as a silica source and cetyltrimetylammoniumbromide (CTAB) as a surfactant with the following gel composition: 1SiO2: 0.106CTAB: 0.03NaOH: 150H2O. The obtained material was characterized by XRD and BET. RH-MCM-41 exhibits high surface area and highly ordered hexagonal mesoporous structures. The adsorption of phenol over RH-MCM-41 fit well to both Langmuir and Freundlich isothermers.
7p
uocvong03
24-09-2015
85
12
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Nitrogen contamination may come from a variety of sources: municipal sewage, animal manure, atmospheric deposition, biological N fixation, soil organic N, and/or nitrogen fertilizers. The consequences of contamination in a specific water body will depend upon the amount of contamination from all sources and characteristics of the receiving waters. Shallow rivers, wetlands, lakes, and reservoirs, have some capacity to remove nitrogen by microbial denitrification.
12p
tainhacmienphi
19-02-2013
46
4
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