bf4

Boron convert into BF4 ~ with concentrated hydrofluoric acid in advance .

预先用浓氢氟酸将硼转化成氟硼酸根，然后在pH4用氟硼酸根离子选择电极进行测量。

The mixtures of [ bmim ] [ BF4 ] + water are studied by molecular dynamics simulation .

针对室温离子液体[bmim][BF4]和水的混合物，用分子动力学模拟研究了溶液的微观组成与浓度的关系。

Besides , [ Bmim ] BF4 contained traces of water because of its hydrophilicity . 2 .

此外，由于所合成离子液体具有亲水性，[Bmim]BF4中还含微量的水分。

Mannich reaction between aromatic ketone , aromatic aldehyde and aromatic amine also proved to be feasible in [ bmim ] BF4 .

芳香酮、芳香醛和芳香胺三组分的Mannich反应在[bmim]BF4中进行也是可行的。

The prepare result of the water-soluble ionic liquids [ bmim ] BF4 shows that the synthetic cost was decreased under guaranteeing the purity of products .

对水溶性的离子液体[bmim]BF4，在保证产品纯度的前提下，降低了合成成本。

There has the highest catalytic activity of TS-1 in ionic liquid [ C2mim ] BF4 and the total yield of oxidation products reaches 14.9 % .

[C2mim]BF4离子液体中，TS-1的催化活性最好，环己烷氧化产物的总收率高达14.9%。

The electro-deposition of iron-cobalt alloy in the ionic liquid [ BMIM ] BF4 is aslo non-reversible diffusion-controlled process .

循环伏安曲线测试表明：铁在离子液体[BMIM]BF4中的电沉积是扩散控制下的非可逆过程。

Hydrophilic [ bmim ] [ BF4 ] and [ bupy ] [ BF4 ] inhibited the enzyme activity .

亲水性离子液体[bmim][BF4]和[bupy][BF4]对酶活有抑制作用。

The ionic liquid of 1-methyl-3-ethoxyl imidazolium tetrafluoroborate ( [ C2OHmim ] BF4 ) was prepared and characterized by FTIR .

合成了1-甲基-3-羟乙基咪唑四氟硼酸盐离子液体（[C2OHmim]BF4），用红外光谱表征了其结构。

Tribological properties of [ C2OHMIM ] BF4 and Ag nanoparticles-doped [ C2OHmim ] BF4 were investigated on four-ball machine .

在四球摩擦磨损实验机上研究了[C2OHmim]BF4离子液体及掺入Ag纳米微粒后的离子液体的摩擦学性能。

We found that solvent effect is comparatively obvious and the efficiency of catalyst is better in ionic liquid [ bmim ] [ BF4 ] than in molecular solvent . The optimized reaction conditions are using 2 .

发现溶剂效应非常明显，使用离子液体[bmim][BF4]比分子溶剂催化效果要好得多。

The results also indicate that [ EOEMIM ] [ BF4 ] mainly shows the plasticizing effect , and [ AOEMIM ] [ BF4 ] mainly plays the role of nucleation . 4 .

其中[EOEMIM][BF4]主要表现为增塑作用，[AOEMIM][BF4]主要表现为成核作用。

The experiments proved that [ EMIM ] + [ BF4 ] - could withdraw the azeotropic point of ethanol-water system and could be used as the extractive distillation solvent for the separation of ethanol and water .

实验表明：[EMIM]+[BF4]-可以消除乙醇-水体系的共沸点，可以作为萃取精馏分离乙醇-水体系的溶剂。

Second , we completed the selective N-alkylation and electrophilic addition of pyrrole ionic liquids [ Bmim ] [ BF4 ] , [ Bmim ] [ PF6 ] .

第二、我们成功地在离子液体[Bmim][BF4]、[Bmim][PF6]中实现了选择性进行吡咯的亲核取代和亲电加成反应。

The results indicate that acetonitrile and any of the three ILs can form a negative deviation system , and acetonitrile + [ C4mim ] [ BF4 ] exhibits lower saturated vapor pressures than the other two binary systems .

实验结果显示，乙腈与所选离子液体均形成负偏差系统，其中[C4mim][BF4]对降低乙腈的饱和蒸汽压的效果大于另两种离子液体。

We treated three ionic liquids , [ bmim ] Cl , [ bmim ] BF4 and [ bmim ] PF6 in a certain plasma condition , and studied the characteristics of functional groups by FTIR analyses .

我们选择一定的等离子体产生条件，分别对三种咪唑基离子液体[bmim]Cl、[bmim]BF4和[bmim]PF6进行处理，并通过傅里叶变换红外光谱的手段研究了其官能团对应的特征峰。

Using neopentyl glycol as protecting reagents , the results showed that most of the aldehydes or ketones gave almost quantitative conversions in [ Hmim ] BF4 except for the ketones with big steric hindrance .

结果表明，用新戊二醇在[Hmim]BF4中保护羰基化合物，试剂与底物等摩尔反应，除一些有位阻的酮外，大多数醛、酮得到几乎定量的转化率，几乎无副反物生成。

The highest total concentration rate of SiO2 · Im + · Cl - / BF4 - could still reach 66.7 % , 65.8 % for biflavones and daphnoretin respectively , but there was no significant difference between them .

SiO2-Im+·Cl-和SiO2·Im+·BF4-对双黄酮和双白瑞香素的总富集率最高分别可达66.7%、65.8%，但两者之间无显著性差异。

1H NMR , 13C NMR , and 13C spin-lattice relaxation time ( T1 ) of the mixtures of room temperature ionic liquid [ C8mim ] [ BF4 ] and acetone with different proportions have been studied by NMR .

运用核磁共振手段，研究了室温离子液体1-辛基-3-甲基咪唑四氟硼酸盐（[C8mim][BF4]）在不同比例的离子液体/丙酮混合体系中1H和13C的化学位移及13C的自旋-晶格弛豫时间（T1）。

To place tannase in 20 % [ bmim ] [ BF4 ] and [ bupy ] [ BF4 ] for 5 min , the remaining activity was 95 % and 93 % separately .

单宁酶在含20%[bmim][BF4]和[bupy][BF4]的离子液体中培育5min后，剩余酶活分别为95%和93%。

Fourth , we completed the condensation of succinic anhydride , maleic anhydride and phthalic anhydride with aromatic amines and alphatic amines without an added base in ionic liquids [ Bmim ] [ BF4 ] , [ Bmim ] [ PF6 ] .

第四、报道了离子液体[Bmim][BF4]、[Bmim][PF6]促进邻苯二甲酸酐、丁二酸酐和丁烯二酸酐与芳胺、脂肪胺的直接缩合反应。