In accordance with the present invention, in the presence of an alcohol based compound formed by hydration of a compound represented by chemical formula 1, without the incorporation of another alcohol solvent, polysilicic acid is applied as a reactant in the synthesis of a pre hydrolyzed poly...
c. Aerogel - solvent removed by supercritical extraction View all Agricultural Uses A hard granular hygroscopic form of hydrated silica is called silica gel. It is made by heating a coagulated sol of sodium silicate. It is used as a catalyst and a desiccant. Potential Exposure Amorphous fumed...
Expanded perlite, was found to be less effective than silica aerogel and fumed silica requiring a low pressure below 0.1mbar to achieve the desired design centre of panel thermal conductivity value[26]. Expanded perlite can be used in combination with fumed silica in different mass ratios and suc...
c. Aerogel - solvent removed by supercritical extraction Agricultural Uses A hard granular hygroscopic form of hydrated silica is called silica gel. It is made by heating a coagulated sol of sodium silicate. It is used as a catalyst and a desiccant. ...
生产工艺 Process 凝胶法 Aerogel 凝胶法 Aerogel 沉淀法 Precipitated 二氧化硅含量% Sio2 contect(dry) 99.9 99.9 99.9 平均粒径um Particle size 3-4 5-6 5-6 孔容ml/g Pore volume 1.6-1.8 1.6-1.8 1.4 干燥减量% 105℃ 2h Heating loss 4-5 4-5 4-5 灼烧减量% 950℃ 2h Ignition loss 5-8 ...
XRF (X-Ray Fluorescence Spectrometer) Thermo Niton™ XL3p + XRF Analyzer X-ray fluorescence technology was used for the determination of the chemical composition of silica-chitosan aerogel. Adsorption experiments Batch adsorption experiments were performed in 1000 mL beakers containing pharmaceutical...
Table 1 Experimentally measured SERS enhancement factor for benzenethiol molecules adsorbed on metal-coated aerogel substrates. Full size table Conclusion We fabricated large size metal-coated aerogels with a size of a few tens of centimeters by a simple, low-cost chemical synthesis and metal depositi...
intheexternalwallinsulationsystemIl1 .Butitsinherent disadvantages,suchashighthermalconductivityandpoorflameretardantperformance,cannotbeignored.Silica aerogel[ZJisahighlyporousmaterialwithporediametersintherangeof1-100nm .Theporosityisupto80%to 99.8%.whichcombinedwiththenanometerporesizemakestheaerogelahighly...
(SiO2);Cab-O-Sil;Vulkasil S;Cab-O-Sil MS 7;Aerosil A 175;Aerosil 200;Cab-O-Sil L 5;FK 500LS;Zipax;Aerogel 200;Aerosil K 7;Aerosil 380;Cab-O-Sil N 5;Extrusil;Ludox HS 40;Manosil VN 3;Nalcoag 1050;Quso G 30;Sillikolloid;Tokusil TPLM;Ultrasil VN 3;Aerosil E 300;Syton...
Precipitated silica aerogel (PSA, A200, CAS:7631-86-9, SiO2·xH2O, analytically pure) was obtained from Usolf Chemical Technology Co., Ltd in Shandong province of China, which held hydrophilicity and particle diameter ranging from 50 to 100 nm. Analytically pure white solid APP (NH4(PO3)n...