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- Besides, the conversion of ethanol have been found to be dependent on the amount of surface acid sites on zeolites. 乙醇转化率与分子筛表面酸量有关。
- STUDY ON SURFACE ACID SITES OF DIATOMITE AND THEIR ORIGINS 硅藻土表面酸位及其来源探讨
- The surface acid sites of diatomite detected by pyridine-Raman spectrometry 运用吡啶吸附-拉曼光谱探测硅藻土表面酸位
- surface acid sites 表面酸中心
- 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. 催化剂表面由Lewis碱位(MoO键的端氧和Fe-O-Mo键中的桥氧)及Lewis酸位构成。
- 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. FePO4 和AlPO4 间隔分布在催化剂表面 ;形成Lewis碱位 (P =O ;P O Fe)和Lewis酸位 (Fe3 + ;Al3 + ) .
- The experimental results haveshown that ZnO is dispersed on the surface of TiO_2 as a monolayer, the combinationbetween ZnO and TiO_2 is quite weak and can not lead to the production of newsurface acid sites. 实验表明,ZnO单层分散在TiO_2表面上,ZoO与TiO_2之间的结合较弱,这种表面结合并不导致新的表面酸位。
- The high catalytic activity of Ga_2O_3 was probably associated with an abundance of surface medium-strong acid sites related to the coordinatively unsatured Ga~3+ cations and the conjugated effect of proton and oxide. 催化剂的催化活性和其表面酸密度密切相关;在Ga2O3结构中;四配位Ga3+是其酸位的来源;并通过质子与氧化物的共同作用促进反应进行.
- 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. 实验结果表明:在Cu/V2O5-TiO2催化剂表面存在金属位Cu、Lewis酸位V5+和Ti4+以及Lewis碱位V-O-Ti的桥氧和V=O的端氧三类活性中心;
- Enhancement of the quantity of strong acid sites is the trend in development of C4-olefins cracking catalysts. 尽可能提高催化剂表面强酸的酸量是C4烯烃催化裂解制丙烯反应催化剂的研制方向。
- On the other hand, both Br? nsted and Lewis acid sites are observed on PW/USY catalysts. 由于PW与USY孔壁的弱相互作用，PW和USY的酸性中心得到保存，PW/USY催化剂的酸量较USY和PW有较大提高，其表面同时存在B（Br?nsted）酸和L（Lewis）酸中心。
- The experimental results show that ammonia molecule is adsorbed preferentially on the B acid sites. 实验结果还表明氨分子在B酸中心上优先被吸附。
- Medium-strength acid sites are predominant in NiO-ZSM-5, which promote producing triethylenediamine(TEDA). 而 NiO-ZSM-5 含有大量中等强度的酸中心,有利于三乙烯二胺(TEDA)生成。
- It is shown that the acid sites of the zeolites play an important role on coke deposition. 酸强度越高,越容易积炭,酸量越大积炭越多。
- The strength of chemical-strengthening glass is analyzed before and after surface acid etching, and the strength reservation of glass corroded is studied. 对离子交换增强玻璃表面不同程度酸腐蚀后强度变化的情况进行了分析,并对表面腐蚀后强度的保留进行了研究。
- It is suggested that the interaction of SO 2- 4 group with Zr in binary oxide result in the forming of acid sites. 研究结果表明 ;SO2 - 4基团与二元氧化物中Zr原子作用形成了酸性中心 .
- The coexistence of acid sites and nickel sulfide sites on the zeolite will promote the thiophene hydrodesulfurization reaction significantly. 催化剂表面酸性位和硫化镍活性位共存;对噻吩加氢脱硫反应是有利的.
- Surface acidity of CLM probably originates from the pillars and its surface hydroxy. 表面酸性可能来源于柱子和表面羟基,柱子的热稳定性对表面羟基,表面酸性均有较大影响。
- The results showed that both L and B acid sites exist on SO- 2- 4/TiO 2 photocatalys t while only L acid sites on TiO 2 photocatalyst. 结果表明 ,TiO2 光催化剂的表面只有L酸中心 ,而SO2 -4 /TiO2 光催化剂表面既有L酸中心也有B酸中心。
- Surface acidity is one of the important surface chemical properties of silicate clay minerals. 摘要表面酸性是硅酸盐黏土矿物的重要表面化学性质之一。
