si-oh 中文意思是什麼
si-oh
解釋
層狀硅酸鹽中斷鍵外裸露的-
In order to low the concentration of oh in material, sio2 and sio2 - zro2 gel glasses were fabricated by non - hydrolytic sol - gel ( nhg ) process. the structures of gel glasses were characterized by ir spectra. the concentration of si - oh in sio2 gel glasses fabricated by nhg was estimated and lower than that by hydrolytic sol - gel
材料中的殘余羚基( oh )可強烈碎滅近紅外發光,為有效降低材料中的羚基含量,採用無水瘩膠一凝膠工藝制備了5102 、 5102一zro :凝膠玻璃,用紅外光譜對其結構進行了表徵,並且估算了510 :凝膠玻璃中的si一oh含量。 -
Ethanol synthesis ; rh - mn catalyst ; active site ; si - oh
乙醇合成銠錳催化劑活性位硅羥基 -
Catalyst for ethanol synthesis. the results show that the reactive metals rh and mn are fixed on the catalyst surface by the interaction with si - oh, which can enhance the stability of highly dispersed metals. rh and mn interact with each other to form the acitve site with high ethanol synthesis activity. the surface si - oh was found to be of significance on the preparation of catalyst with high catalytic activity
的性質,結果表明,活性金屬銠及錳經浸漬法擔載于載體上后即與表面羥基作用使金屬固定在氧化硅的表面上,保證了高度分散活性金屬的穩定性高度分散中的銠錳相互結合,構成了乙醇合成中的高活性位研究發現表面硅羥基在催化劑制備過程中起著重要作用。 -
“ i ' d like to buy a pair of shoes, ” li si said. “ what sizes are they, then ? ” asked the salesman. “ oh, i left my measurements at home, ” was the answer
李四說: 「我要買一雙鞋。 」鞋店伙計問: 「多大尺寸? 」李四說: 「哎呀,我把尺寸忘在家裡了。 」 -
The incorporation re3 + ions creates si - o - re bonds, which are more resistant to attack from water and may also reduce the concentration of silanol groups. furthermore, the presence of re in tetrahedral positions creates a negative charge on the surface of the pore walls, which repels the oh " ions that catalyze the hydrolysis of siloxane bonds
D ) rehms介孔固體其合成和焙燒樣品的凹stmasn 』 mr譜明顯不同於純硅樣品,樣品展示一個寬的共振峰,化學位移在6 。 101卯m和1llnnm ,對應于q 』和q 『硅環境。 -
Oh - adsorption and desorption mechanism on si surface
面上的吸附與脫附作用機理 -
( 3 ) a lot of si - oh existing in the surface of sio2 improved the hydrophilicity of composite membrane
可見, sio _ 2起到改善膜綜合性能的重要作用。 -
The experimental results show that the surface si - oh bonds infrared intensity of ultrafine silicon dioxide was decreased and thermogravimetric loss was increased by using fourier infrared ( ftir ) spectroscopy and thermogravimetric ( tg ) analyzer
傅立葉紅外光譜和熱重分析結果表明,改性后的超細二氧化硅顆粒表面的硅羥基吸收峰明顯減小。
分享友人