Process for separating uranium isotopes by oxidation-reduction
chromatography
    1.
    发明授权
    Process for separating uranium isotopes by oxidation-reduction chromatography 失效
    通过氧化还原色谱分离铀同位素的方法

    公开(公告)号:US4748008A

    公开(公告)日:1988-05-31

    申请号:US816056

    申请日:1986-01-03

    CPC分类号: C22B60/0265 B01D59/30

    摘要: In a process for continuously separating uranium isotopes, .sup.235 U and .sup.238 U, by oxidation-reduction chromatography using a column of an anion exchanger, the separation of uranium isotopes and the regeneration of the oxidizing agent and reducing agent both deactivated during the separation of uranium isotopes can be simultaneously effected in a single column by returning to and passing through the column of an anion exchanger having a uranium adsorption zone an eluate containing a deactivated oxidizing agent and a deactivated reducing agent to regenerate the deactivated oxidizing agent and the deactivated reducing agent and to form an oxidizing agent zone, and returning to and passing through the column the regenerated reducing agent for the reduction of uranium.

    摘要翻译: 在通过使用阴离子交换剂柱的氧化还原色谱法连续分离铀同位素235U和238U的过程中,铀同位素的分离以及在分离铀同位素期间都失活的氧化剂和还原剂的再分离可以 通过返回并通过具有铀吸附区的阴离子交换剂的柱,同时进行含有去活化氧化剂和失活还原剂的洗脱液以再生失活的氧化剂和失活的还原剂并形成 氧化剂区,并返回并通过塔再生还原剂用于还原铀。

    Method for the separation of carbon isotopes by chemical exchange method
    2.
    发明授权
    Method for the separation of carbon isotopes by chemical exchange method 失效
    通过化学交换法分离碳同位素的方法

    公开(公告)号:US4406870A

    公开(公告)日:1983-09-27

    申请号:US293220

    申请日:1981-08-10

    IPC分类号: B01D59/30 C01B31/00

    CPC分类号: B01D59/30 Y10S423/07

    摘要: A method for the separation of the isotopes of carbon comprising contacting an aqueous solution containing an acid-dissociated type chemical species of a carbon-containing acid and a non-dissociated type chemical species of said acid with an anion exchange resin as a solid phase, thereby to allow an isotope exchange reaction with respect to carbon to proceed between said acid-dissociated type chemical species and said non-dissociated type chemical species and, concurrently, to adsorb said acid-dissociated type chemical species on said anion exchange resin, and separate C.sup.12 and C.sup.13 respectively into a solution phase and the solid phase or the solid phase and a solution phase, whereby C.sup.13 is concentrated. This method can be practised at an extremely favorable efficiency and inexpensive cost, as compared with the prior art method for the separation utilizing a distillation method or a chemical exchange method between gas--liquid phases, gas--solution phases, solution--solution phases and the like.

    摘要翻译: PCT No.PCT / JP80 / 00326 Sec。 371日期1981年8月10日 102(e)日期1981年8月10日PCT提交1980年12月2日PCT公布。 出版物WO81 / 01802 日本1981年7月9日。一种用于分离碳同位素的方法,包括使含有酸的酸的解离型化学物质和所述酸的非离解型化学物质的水溶液与阴离子 交换树脂作为固相,从而允许在所述酸解离型化学物质和所述非解离型化学物质之间进行相对于碳的同位素交换反应,并且同时将所述酸解离型化学物质吸附在 所述阴离子交换树脂,并将C12和C13分别分离成溶液相和固相或固相和溶液相,由此C13浓缩。 与现有技术的分离方法相比,可以以非常有利的效率和廉价的成本实现该方法,其中使用蒸气法或气 - 液相,气溶相,溶液相之间的化学交换方法 喜欢。