Selective chromatographic process using an ion-exchanged, dehydrated
chabazite adsorbent
    11.
    发明授权
    Selective chromatographic process using an ion-exchanged, dehydrated chabazite adsorbent 失效
    使用离子交换的脱水菱沸石吸附剂进行选择性色谱法

    公开(公告)号:US4747854A

    公开(公告)日:1988-05-31

    申请号:US66789

    申请日:1987-06-25

    IPC分类号: B01J20/18 B01D53/04

    CPC分类号: B01J20/186 Y10S95/902

    摘要: The present invention relates to a process for the selective adsorption and separation of one or more constituents from a gas stream in a gas chromatograph, wherein the gas stream is contacted with a dehydrated chabazite adsorbent having a residual water content of less than 1.5 wt % and having at least 50% of any exchangeable ion capacity exchanged with a polyvalent metal cation. The process of the present invention both anticipates separation of the constituents due to either a difference in the heats of adsorption of the constituents or a size exclusion effect.

    摘要翻译: 本发明涉及在气相色谱仪中从气流中选择性吸附和分离一种或多种成分的方法,其中气流与残留含水量小于1.5重量%的脱水菱沸石吸附剂接触, 具有与多价金属阳离子交换的任何可交换离子容量的至少50%。 本发明的方法既预期由于组分的吸附热差异或尺寸排阻效应导致组分的分离。

    Process for the purification of permanent gases using chabazite
adsorbents
    12.
    发明授权
    Process for the purification of permanent gases using chabazite adsorbents 失效
    使用菱沸石吸附剂净化永久性气体的方法

    公开(公告)号:US4732584A

    公开(公告)日:1988-03-22

    申请号:US53283

    申请日:1987-05-22

    IPC分类号: B01J20/18 B01D53/04

    CPC分类号: B01J20/186

    摘要: Thoroughly dehydrated, certain forms of chabazite have improved utility for purifying bulk gases. Compared to conventional molecular sieves, these chabazites have improved properties for removing low levels of gas contaminants having larger heats of adsorption than the bulk component. Also, the small pore chabazite can remove weakly interacting adsorbates from bulk gases having kinetic diameters which exceed that of the pore opening. This discovery of the intrinsic properties of polyvalent chabazites expands the range of contaminant gases which can be removed from bulk gases economically using standard adsorption processes, e.g. using these adsorbents it is possible to remove trace nitrogen from argon.

    摘要翻译: 彻底脱水,某些形式的菱沸石已经提高了净化散装气体的效用。 与常规分子筛相比,这些菱沸石具有改进的性能,用于除去具有比主体组分更大的吸附热的低含量气体污染物。 此外,小孔菱沸石可以从具有超过孔开口的动力学直径的体积气体中除去弱相互作用的吸附物质。 这种多价菱沸石的固有性质的发现扩大了可以使用标准吸附方法,例如经济地从散装气体中去除的污染气体的范围。 使用这些吸附剂可以从氩气中除去痕量的氮。

    Polyvalent ion exchanged adsorbent for air separation
    13.
    发明授权
    Polyvalent ion exchanged adsorbent for air separation 失效
    用于空气分离的多价离子交换吸附剂

    公开(公告)号:US4481018A

    公开(公告)日:1984-11-06

    申请号:US441822

    申请日:1982-11-15

    摘要: The invention relates to faujasite-containing compositions in which the original hydrogen or monovalent forms are ion exchanged to their polyvalent form and then thermally activated to promote dehydration and dehydroxylation of the faujasite while maintaining substantially the same zeolite content. The resulting compositions containing faujasites substantially in their dehydrated/dehydroxylated state have been found to have surprisingly high selectivities and capacities for the separation of air into nitrogen and oxygen.

    摘要翻译: 本发明涉及含有八面沸石的组合物,其中原始氢或一价形式被离子交换为其多价形式,然后热活化以促进八面沸石的脱水和脱羟基化,同时保持基本相同的沸石含量。 已经发现得到的含有基本上脱水/脱羟基化状态的八面沸石的组合物具有惊人的高选择性和将空气分离成氮和氧的能力。

    Process for preparing halogenated metal chelates
    14.
    发明授权
    Process for preparing halogenated metal chelates 失效
    制备卤化金属螯合物的方法

    公开(公告)号:US4150047A

    公开(公告)日:1979-04-17

    申请号:US883885

    申请日:1978-03-06

    CPC分类号: C07C49/92 C07C45/77

    摘要: This invention relates to an improved process for preparing halogenated metal chelates of beta-dicarbonyl compounds, particularly the tris-brominated acetylacetonates. The process comprises passing elemental halogen through a solution comprising the metal chelate, an inert solvent in which the metal chelate has a solubility of at least 0.5 grams per 100 grams solvent and the halogenated product has a solubility of less than 1 gram per 100 grams solvent and a halogenated Lewis acid at a temperature from about 0.degree.-60.degree. C. thereby forming a halogenated metal chelate precipitate and then recovering the precipitate.

    摘要翻译: 本发明涉及一种制备β-二羰基化合物,特别是三溴化乙酰丙酮化物的卤化金属螯合物的改进方法。 该方法包括使元素卤素通过包含金属螯合物的溶液,惰性溶剂,其中金属螯合物的溶解度至少为0.5克/ 100克溶剂,卤化产物的溶解度小于1克/ 100克溶剂 和卤代路易斯酸,在约0°-60℃的温度下,由此形成卤化金属螯合物沉淀,然后回收沉淀物。

    Nitrogen adsorption process
    17.
    发明授权
    Nitrogen adsorption process 失效
    氮吸附过程

    公开(公告)号:US4544378A

    公开(公告)日:1985-10-01

    申请号:US614086

    申请日:1984-05-24

    摘要: The invention relates to a process for adsorption of nitrogen from nitrogen-containing gases using faujasite-containing compositions in which the original hydrogen or monovalent forms are ion exchanged to their polyvalent form and then dehydrated in such a manner as to result in a preponderence of its polyvalent ions in a dehydrated/dehydroxylated state while maintaining substantially the same zeolite content. The resulting compositions, whose cations contained in the faujasitic portion are substantially in their dehydrated/dehydroxylated state, have been found to have surprisingly high selectivities and capacities for the separation of air into nitrogen and oxygen.

    摘要翻译: 本发明涉及一种使用含有八面沸石的组合物从含氮气体中吸附氮的方法,其中原始氢或一价形式离子交换成其多价形式,然后脱水,从而导致其 多价离子处于脱水/脱羟基状态,同时保持基本相同的沸石含量。 已经发现所得到的组合物,其阳离子基本上处于脱水/脱羟基状态,具有令人惊奇的高选择性和将空气分离成氮和氧的能力。

    Magnesium A-zeolite for nitrogen adsorption
    19.
    发明授权
    Magnesium A-zeolite for nitrogen adsorption 失效
    用于氮吸附的镁A沸石

    公开(公告)号:US5354360A

    公开(公告)日:1994-10-11

    申请号:US3191

    申请日:1993-01-11

    IPC分类号: B01D53/04 B01J20/18

    摘要: The present invention is directed to a process for separating nitrogen from gas mixtures containing nitrogen and less strongly adsorbed components such as oxygen, hydrogen, argon or helium at ambient temperatures or above by use of a magnesium exchanged, sodium A-zeolite in a preferred level of magnesium exchange and an appropriate pressure range for adsorption and desorption of bulk gases which provides improved recovery and reduced bed size factor.

    摘要翻译: 本发明涉及一种通过使用镁交换的α-沸石在优选水平中从氮气和气体混合物中分离氮气的方法,所述气体混合物包含氮气和较弱吸附组分如氧气,氢气,氩气或氦气。 的镁交换和用于散装气体的吸附和解吸的适当压力范围,其提供改进的回收率和减小的床尺寸因子。