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    • 12. 发明申请
    • Removal of Trace Arsenic Impurities from Triethylphosphate (TEPO)
    • 从三乙基磷酸盐(TEPO)去除痕量砷杂质
    • US20100018849A1
    • 2010-01-28
    • US12179979
    • 2008-07-25
    • Steven Gerard MayorgaHeather Regina BowenKelly Ann Chandler
    • Steven Gerard MayorgaHeather Regina BowenKelly Ann Chandler
    • B01D3/34
    • C07F9/11C07F9/025
    • A method of removing trace levels of arsenic-containing impurities from raw triethylphosphate (TEPO) is disclosed. The method uses adsorption, or adsorption followed by a flash distillation. The method comprises contacting raw triethylphosphate (TEPO) with an adsorbent which selectively adsorbs the arsenic-containing impurities in the raw triethylphosphate (TEPO). The adsorbent is a base promoted alumina containing adsorbent represented by a formula: ZxWy; where x is the weight percentage of Z in the adsorbent ranging from 30% to 99.999%; y is the weight percentage of W in the adsorbent, and x+y=100%; Z is selected from the group consisting of alumina (Al2O3), magnesium-alumina based layered double hydroxide (MgO—Al2O3), alumina-zeolite, and mixtures thereof; and W is selected from the group consisting of at least one basic metal oxide, at least one basic metal carbonate, and mixtures thereof. The method will result in a final triethylphosphate (TEPO) with a few ppb to less than 1 ppb arsenic containing impurities.
    • 公开了从原料三乙基磷酸盐(TEPO)中除去痕量砷含量杂质的方法。 该方法使用吸附或吸附,然后进行快速蒸馏。 该方法包括将原料三乙基磷酸盐(TEPO)与选择性吸附原料三乙基磷酸盐(TEPO)中的含砷杂质的吸附剂接触。 吸附剂是由式ZxWy表示的碱性促进氧化铝的吸附剂。 其中x是吸附剂中Z的重量百分数,范围为30%至99.999%; y是吸附剂中W的重量百分数,x + y = 100%; Z选自氧化铝(Al2O3),镁 - 氧化铝基层状双氢氧化物(MgO-Al 2 O 3),氧化铝 - 沸石及其混合物; W选自至少一种碱金属氧化物,至少一种碱金属碳酸盐及其混合物。 该方法将产生具有几ppb至少于1ppb含砷杂质的最终三乙基磷酸酯(TEPO)。
    • 16. 发明授权
    • Removal of trace arsenic impurities from triethylphosphate (TEPO)
    • 从磷酸三乙酯(TEPO)去除痕量砷杂质
    • US08039658B2
    • 2011-10-18
    • US12179979
    • 2008-07-25
    • Steven Gerard MayorgaHeather Regina BowenKelly Ann Chandler
    • Steven Gerard MayorgaHeather Regina BowenKelly Ann Chandler
    • C07F9/09
    • C07F9/11C07F9/025
    • A method of removing trace levels of arsenic-containing impurities from raw triethylphosphate (TEPO) is disclosed. The method uses adsorption, or adsorption followed by a flash distillation. The method comprises contacting raw triethylphosphate (TEPO) with an adsorbent which selectively adsorbs the arsenic-containing impurities in the raw triethylphosphate (TEPO). The adsorbent is a base promoted alumina containing adsorbent represented by a formula: ZxWy; where x is the weight percentage of Z in the adsorbent ranging from 30% to 99.999%; y is the weight percentage of W in the adsorbent, and x+y=100%; Z is selected from the group consisting of alumina (Al2O3), magnesium-alumina based layered double hydroxide (MgO—Al2O3), alumina-zeolite, and mixtures thereof; and W is selected from the group consisting of at least one basic metal oxide, at least one basic metal carbonate, and mixtures thereof. The method will result in a final triethylphosphate (TEPO) with a few ppb to less than 1 ppb arsenic containing impurities.
    • 公开了从原料三乙基磷酸盐(TEPO)中除去痕量砷含量杂质的方法。 该方法使用吸附或吸附,然后进行快速蒸馏。 该方法包括将原料三乙基磷酸盐(TEPO)与选择性吸附原料三乙基磷酸盐(TEPO)中的含砷杂质的吸附剂接触。 吸附剂是由式ZxWy表示的碱性促进氧化铝的吸附剂。 其中x是吸附剂中Z的重量百分数,范围为30%至99.999%; y是吸附剂中W的重量百分数,x + y = 100%; Z选自氧化铝(Al2O3),镁 - 氧化铝基层状双氢氧化物(MgO-Al 2 O 3),氧化铝 - 沸石及其混合物; W选自至少一种碱金属氧化物,至少一种碱金属碳酸盐及其混合物。 该方法将产生具有几ppb至少于1ppb含砷杂质的最终三乙基磷酸酯(TEPO)。