具有两种基于磷的抗衡离子的结构独特的离子液体磷酸nium和硫代磷酸phospho,其中的阴离子部分由磷酸二芳基酯或磷酸二芳基酯表示,阳离子为四烷基phosph基团,其NMR行为不同。磷酸phospho在1 H,13 C和31 P NMR的化学位移方面显示出显着变化。á。对于四烷基溴化and和磷酸二芳基酯的物理混合物,相应的化学位移,,-硫代磷酸酯在NMR方面与其合成前体的行为几乎相似,因此表明磷酸phosph与磷的相互作用具有显着的共价成分,更类似于液态离子对,而硫代磷酸盐与phosph的相互作用本质上主要是离子性的。通过PFGSE-NMR实验研究的平移扩散行为以及这些离子液体在氯仿溶液中的离子电导率证实了这一假设。在离子缔合程度方面,可以有效地观察到phospho阳离子中烷基链长度的变化。这项研究的结果可能有助于深入了解这些离子液体的溶液状态行为,
A detergent including one or more neutral or overbased alkaline earth metal C
10
to C
40
hydrocarbyl substituted hydroxybenzoates, in which:
(i) the one or more neutral or overbased alkaline earth metal C
10
to C
40
hydrocarbyl substituted hydroxybenzoates is or includes one or more C
10
to C
40
hydrocarb-1-yl substituted hydroxybenzoates; or,
(ii) greater than 50 mole % of the one or more neutral or overbased alkaline earth metal C
10
to C
40
hydrocarbyl substituted hydroxybenzoates, based on the total number of moles of said C
10
to C
40
hydrocarbyl substituted hydroxybenzoates, is or includes one or more C
10
to C
40
hydrocarb-2-yl substituted hydroxybenzoates.
Detergent comprising C10 to C40 hydrocarbyl substituted hydroxybenzoates for reducing asphaltene precipitation
申请人:Bertram Richard D.
公开号:US08404627B2
公开(公告)日:2013-03-26
A detergent including one or more neutral or overbased alkaline earth metal C10 to C40 hydrocarbyl substituted hydroxybenzoates, in which:
(i) the one or more neutral or overbased alkaline earth metal C10 to C40 hydrocarbyl substituted hydroxybenzoates is or includes one or more C10 to C40 hydrocarb-1-yl substituted hydroxybenzoates; or,
(ii) greater than 50 mole % of the one or more neutral or overbased alkaline earth metal C10 to C40 hydrocarbyl substituted hydroxybenzoates, based on the total number of moles of said C10 to C40 hydrocarbyl substituted hydroxybenzoates, is or includes one or more C10 to C40 hydrocarb-2-yl substituted hydroxybenzoates.
Phosphonium-phosphates/thiophosphates: Ionic liquids or liquid ion pairs? NMR spectroscopic classification
作者:Sujit Mondal、Tanmay Mandal、Meeta Sharma、Ravindra Kumar、Ajay K. Arora、Veena Bansal、J. Christopher、G.S. Kapur
DOI:10.1016/j.tetlet.2017.05.031
日期:2017.6
precursors, hence indicating phosphate-phosphonium interaction has a significant covalent component resembling more to a liquid ion pair while thiophosphate-phosphonium interaction is principally ionic in nature. Translational diffusion behavior studied by PFGSE-NMR experiments and ionic conductivities of these ionic liquids in chloroform solution corroborated the hypothesis. The effect of variable
具有两种基于磷的抗衡离子的结构独特的离子液体磷酸nium和硫代磷酸phospho,其中的阴离子部分由磷酸二芳基酯或磷酸二芳基酯表示,阳离子为四烷基phosph基团,其NMR行为不同。磷酸phospho在1 H,13 C和31 P NMR的化学位移方面显示出显着变化。á。对于四烷基溴化and和磷酸二芳基酯的物理混合物,相应的化学位移,,-硫代磷酸酯在NMR方面与其合成前体的行为几乎相似,因此表明磷酸phosph与磷的相互作用具有显着的共价成分,更类似于液态离子对,而硫代磷酸盐与phosph的相互作用本质上主要是离子性的。通过PFGSE-NMR实验研究的平移扩散行为以及这些离子液体在氯仿溶液中的离子电导率证实了这一假设。在离子缔合程度方面,可以有效地观察到phospho阳离子中烷基链长度的变化。这项研究的结果可能有助于深入了解这些离子液体的溶液状态行为,
Ion-association vis á vis hydrophobic effect in novel ionic liquids-tetraalkylphosphonium/polyisobutylenesuccinimide-tethered tetraalkylammonium diarylphosphates/thiophosphates: Synthesis and application
作者:Sujit Mondal、Tanmay Mandal、Meeta Sharma、Ravindra Kumar、Ajay K. Arora、J. Christopher、Gurpreet S. Kapur
DOI:10.1016/j.molliq.2019.112084
日期:2019.12
PIBSI-TP, it is the hydrophobiceffect of the long chain PIB backbone which dominates the course, effect of cationic alkyl chain length was not much observed. The ILs were synthesized either from an anion exchange reaction between tetraalkylphosphonium bromides and diarylphosphate/thiophosphate (former) or from a reaction of same diarylphosphate/thiophosphate with tetraalkylammonium bromide derived from