... Một số tính chất vật lí của ethyleneglycol và dẫn xuất: Tên chất Diethylene glycol Trietylen glycol Tetraethylene glycol Công thức Monoethylene glycol HOCH2CH2OH H(OCH2CH2 ) 2OH H(OCH2CH2 ) 3OH H(OCH2CH2 ... dùng công nghiệp e Phản ứng epoxy hóa Ethyleneglycol phản ứng với ethylene oxit để tạo thành di , tri , tetra , và polyethylen glycol. Tỷ lệ của các glycol tìm thấy trong các sản phẩm phản ứng phụ thuộc vào loại xúc tác được xử dụng ... thành glycol monoaxetat so với glycol diaxetat ( 60-100 oC, 3.04 MPa) Nếu sử dụng hệ xúc tác PdCl - NO2 – CH3CN hòa tan axit axetic cho kết ethyleneglycol monoaxetat ( 50% sản lượng ) etylen glycol...
... oxidation of ethyleneglycol in acidic and basic media has been investigated widely [24– 26] In the aqueous solution, the oxidation of ethyleneglycol involves the following reaction steps: [25] Ethylene ... EthyleneGlycol ! Glycolaldehyde ! Glyoxal or Glycolic acid ! Glyoxylic Acid ! Oxalic acid ! Carbon dioxide: ð1Þ In acid media, predominant formation of glycolaldehyde (CH2OH–CHO) and glycolic ... reported 12 V as the limiting anodization potential in ethylene glycol; whereas, Paulose et al [12] anodized at 60 V using anhydrous ethyleneglycol These different observations also could be related...
... Labidi et al / Sensors and Actuators B 120 (2006) 338–345 as H2 S [11], NOx [12,13], O3 [14,15] and C2 H6 O [16,17] It is well known that WO3 like the majority of metal oxide -based gas sensors suffer ... that the Au/WO3 sensor gives A Labidi et al / Sensors and Actuators B 120 (2006) 338–345 341 Table Response “Sgas ” of WO3 bare, Au/WO3 and Pd/WO3 basedsensors towards 2% of C2 H6 O and 0.8 ppm ... (×106 ) Cgb (×10−7 F) n a b 0.018 1.81 0.967 2.37 6.81 0.433 Sensors Gases Table Modeled RC for WO3 bare, Au/WO3 and Pd/WO3 basedsensors towards 0.8 ppm of O3 and dry air (baseline) at 300 ◦...
... responses were obtained by the WO3 micro -sensors deposited with the floating regime in comparison with the sensors fabricated with the interruption regime All types of sensors showed higher responses at ... Sensitivity Table shows the sensor response to NO2 for the micro -sensors prepared with interrupted and floating regimes Four types of micro -sensors were studied (i.e., two types of electrode geometries ... four micro -sensors had a 100 m gap (wide electrode gap) and the other two had a 50 m gap (narrow electrode gap) The electrode area in all cases was 400 m × 400 m The layout of the sensors array...
... prepared using (i) 20 ml ethyleneglycol for day at (a) 140 °C, (b) 160 °C (low magnified), (c) 160 °C (high magnified), (d) 180 °C and (ii) at 160 °C for day using ethyleneglycol (e) ml and (f) ... schematic diagram of flower like ZnO architecture prepared (a) absence of ethyleneglycol and (b) presence of ethyleneglycol Fig Raman spectrum of ZnO crystals Fig Room temperature PL spectrum ... the quantity of ethyleneglycol is reduced to less than 20 ml On the other hand, the morphology of the ZnO is changed to hexagonal rods (Fig 2e and f) when the quantity of ethyleneglycol is reduced...
... METHANOL VÀ ETHYLENEGLYCOL TƯƠNG TỰ NHAU NHƯ THẾ NÀO ? Methanol ethyleneglycol khởi đầu chuyển hóa ADH Methanol tiếp tục chuyển hóa thành formic acid, ethyleneglycol chuyển hóa thành glycolic ... xét đến ngộ độc alcohol, methanol hay ethyleneglycol Nếu có osmolal gap bất thường anion gap, xét đến ngộ độc isopropyl alcohol 10/ METHANOL VÀ ETHYLENEGLYCOL ĐỘC NHƯ THẾ NÀO ? Tử vong ghi nhận ... Chúng nên sử dụng nồng độ ethyleneglycol hay methanol vượt 20 mg/dL ; có nhiễm toan nồng độ ; có bệnh sử uống chất độc chờ đợi nồng độ xác nhận methanol hay ethyleneglycol 19/ ĐIỀU TRỊ ETHANOL...
... Publication No 83-112: Glycol ethers, 2-methoxyethanol and 2-ethoxyethanol May 2, 1983 Foster, P M D., Creasy, D M., Foster, J R and Gray, T B J Testicular toxicity produced by ethyleneglycol monomethyl ... of ethyleneglycol monomethyl and monoethyl ether in the rat Toxicol Appl Pharmacol 1983, 69, 385-399 Gray, T B J., Moss, E J., Creasy, D M and Gangolli, S D Studies on the toxicity of some glycol ... Park, C S., Lee, K H., Roh, H K and Cha, Y N Decreased formation of ethoxyacetic acid from ethyleneglycol monoethyl ether and reduced atrophy of testes in male rats upon combined administration...
... 1,2-propanediol, 1,3-propanediol, diethylene glycol hay glycerin 1,2-Propanediol Start Time a (min) 4.0 EthyleneGlycol 6.6 1,3-Propanediol 7.5 Diethylene Glycol 9.0 Glycerin 12.0 Group 31 (11) ... giàu gồm có đại diện cho loại mẫu phân tích va làm giàu thêm chất phân tích (tức Diethylene glycolethylene glycol) mức mg/g (hoặc 0.1 % trọng lượng) Phép phân tích mẫu phải thể chất có diện ... tử b - Sự nhận peak: Thời gian lưu gần phép phân tích: Chất 1,2-Propanediol EthyleneGlycol 1,3-Propanediol Diethylene Glycol Glycerin Thời gian lưu (min) 6.4 6.8 8.4 10.4 13.7 Chú giải Đây chất...
... polyethylene glycol esters of hydrocortisone 21-succinate as ocular prodrugs Int J Pharm 1999, 182:79-92 Caliceti P, Veronese FM: Pharmacokinetic and biodistribution properties of poly (ethylene glycol) -protein ... Gunaseelan S, Debrah O, Wan L, Leibowitz MJ, Rabson AB, Stein S, Sinko PJ: Synthesis of poly (ethylene glycol) -based saquinavir prodrug conjugates and assessment of release and anti-HIV1 bioactivity ... antagonist, R.I.CKTat9, alone or in combination with saquinavir on multifunctional poly (ethylene glycol) (PEG) -based bioconjugates is demonstrated Furthermore, the mechanism of Page of 15 (page number...
... previously described [47] Briefly, copolymers composed of branched poly (ethylene imine)-25000 (PEI25K) and methoxypoly (ethylene glycol) -5000 (mPEG5K) (Sigma-Aldrich, St Louis, MO, USA) were prepared ... Poly (ethylene imine) (PEI) is a highly protonatable amine rich polymer that has been established as an efficient nucleotide carrier [10] The cationic nature of PEI allows the poly- Cationic PEI -based ... membranes, promoting endocytotic uptake of the nucleotides into cells [10-17] Grafting of polyethylene glycol (PEG) polymers to PEI has been shown to significantly enhance its functionality as a...
... Polyacrylonitrile Polyethylene Polyethylene glycol Polyethylene oxide Polyether sulfone Polyethylene terepthalate Polypropylene Porcine Pancreatic Lipase Polysulfone Polytetrafluoroethylene (Teflon) ... PEG is also known as polyethylene oxide (PEO) or poly oxyethylene (POE) depending on the definition of its monomer molecule as ethyleneglycol or ethylene oxide or oxyethylene respectively The ... compared to transphilic and hydrophilic fractions 22 3.3 Hydrophilic Enhancer: Poly (Ethylene Glycol) Poly (ethylene glycol) -lipid (PEG-lipid) conjugates are widely used in the field of nanoparticulate...
... Tính chất hóa lý • Giới thiệu Ethyleneglycol NỘI DUNG I Giới thiệu Ethyleneglycol *Ethylene glycol : Tên thường gọi Glycol rượu hai nhóm chức đơn giản *Ethylene glycol ( IUPAC tên : etan-1,2-diol) ... tử nên tách nước từ Ethyleneglycol tạo axetandehit - Ngoài phản ứng có phản ứng hay sử dụng công nghiệp Phản ứng Oxy hóa Phản ứng tạo 1,3- dioxolan Phản ứng ethyleneglycol orthofomates ... polyester, ngành công nghiệp vải nhựa polyethylene terephthalate Cấu trúc không gian Công thức cấu tạo II Tính chất hóa lý Tính chất vật lý Ethyleneglycol chất lỏng không màu không mùi có vị...
... and pore size distribution is quite effective for improving the sensitivity of TiO2-nanotube based gas sensors 60 o O.T 500 C 50 40 500 ppm H2 500 ppm CO 47 ppm Ethanol 50 ppm Toluene 30 20 10 (a) ... sized organic gas molecules References N Yamazoe, G Sakai, K Shimanoe, Oxide semiconductor gas sensors, Catal Surveys from Asia, (2003) 63-75 D E Williams, Semiconducting oxides as gas-sensitive...
... laser (632.81 nm) in the back scattering geometry To fabricate thick film sensors, an appropriate quantity of diethyleneglycol was added to the desired nanostructure of tungsten oxide to obtain ... sensor based on a single tin oxide nanobelt, Appl Phys Lett 88 (2006) 263102–263104 [7] C.S Rout, K Ganesh, A Govindaraj, C.N.R Rao, Sensors for the nitrogen oxides, NO2 , NO and N2 O, based on ... High-sensitivity hydrocarbon sensorsbased on tungsten oxide nanowires, J Mater Chem 16 (2006) 3936–3941 [9] H Huang, O.K Tan, Y.C Lee, T.D Tran, M.S Tse, X Yao, Semiconductor gas sensor based on tin oxide...