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- Lewis堿Lewis base
- Lewis堿改性氧化鋯基質(zhì)色譜固定相的研究進(jìn)展Development of Lewis Base-Modified Zirconia as Stationary Phases for High Performance Liquid Chromatography
- FePO4 和AlPO4 間隔分布在催化劑表面 ,形成Lewis堿位 (P =O ,P O Fe)和Lewis酸位 (Fe3 + ,Al3 + ) .FePO 4 and AlPO 4 distribute at intervals, and there exist Lewis base sites (P=O and P-O-Fe) and Lewis acid sites (Fe 3+ and Al 3+) on the catalyst surface.
- 堿alkali
- 催化劑表面由Lewis堿位(MoO鍵的端氧和Fe-O-Mo鍵中的橋氧)及Lewis酸位構成。There existed both Lewis acid sites(Fe~(3+),Mo~(6+)) and Lewis base sites(oxygen of Mo=O and Mo-O-Fe bond) on the surface of the catalysts.
- 實(shí)驗結果表明:在Cu/V2O5-TiO2催化劑表面存在金屬位Cu、Lewis酸位V5+和Ti4+以及Lewis堿位V-O-Ti的橋氧和V=O的端氧三類(lèi)活性中心;The experimental results pointed out that the three kinds of active sites exist on the surface of the catalysts: Metallic site Cu, Lewis acid sites V~(5+) and Ti~(4+), Lewis base sites bridge O in V-O-Ti and terminal O in V=O.
- 堿基base
- 堿液lye
- 酸堿acid-base
- 堿的alkaline
- 甜菜堿lycine
- 堿水buck
- 左旋肉堿l-cn
- 秋水仙堿colchicine
- 堿洗caustic wash
- 耐酸堿acid and alkali-resistance
- 肉堿carnitine
- 液堿liquid caustic soda
- 耐堿alkaline-resisting
- 酸堿平衡acid base balance
