Laser production of carbon-13 based on CF.sub.2 HCl
    1.
    发明授权
    Laser production of carbon-13 based on CF.sub.2 HCl 失效
    基于CF2HCl的碳-13激光生产

    公开(公告)号:US4436709A

    公开(公告)日:1984-03-13

    申请号:US350741

    申请日:1982-02-22

    IPC分类号: B01D59/34 B01D59/00

    CPC分类号: B01D59/34

    摘要: A method of producing carbon-13 using CF.sub.2 HCl as the feedstock (substrate) material in which the CF.sub.2 HCl is enriched up to a first level of C-13 by I.R. laser photodissociation and then to 90-99% C-13 by a second exchange process. In the preferred arrangement the second stage is a chemical exchange process.

    摘要翻译: 使用CF2HCl作为原料(基质)材料生产碳-13的方法,其中CF2HCl由I.R.富集至第一级C-13。 激光光解,然后通过第二次交换进行到90-99%C-13。 在优选的布置中,第二阶段是化学交换过程。

    Method of production of vitamin-D
    2.
    发明授权
    Method of production of vitamin-D 失效
    维生素D的生产方法

    公开(公告)号:US4388242A

    公开(公告)日:1983-06-14

    申请号:US358201

    申请日:1982-03-15

    IPC分类号: C07C401/00 C07J17/00 C07J9/00

    摘要: A method of upgrading a product containing a minor proportion of pre-vitamin d.sub.2 or pre-vitamin d.sub.3 and a major proportion of tachysterol comprising irradiating the product with laser light in the wavelength range 330-360 nanometers to obtain a product containing approximately 95% pre-vitamin -D.sub.2 or pre-vitamin -D.sub.3, and heating this product to convert the pre-vitamin -D.sub.2 or pre-vitamin -D.sub.3 to vitamin -D.sub.2 or vitamin -D.sub.3.

    摘要翻译: 一种升级包含少量前维生素D 2或维生素D 3和主要比例的速溶甾类产物的产品的方法,包括用波长范围330-360纳米的激光照射产物,以获得含有约95%预 - 维生素-D2或维生素-D3,并加热该产品以将维生素-D2或维生素-D3转化为维生素-D2或维生素-D3。

    Method of producing carbon-13 by multiphoton decomposition of C.sub.3
F.sub.
    3.
    发明授权
    Method of producing carbon-13 by multiphoton decomposition of C.sub.3 F.sub. 失效
    通过C3F6 + B的多光子分解生产碳-13的方法

    公开(公告)号:US4328078A

    公开(公告)日:1982-05-04

    申请号:US132656

    申请日:1980-03-21

    IPC分类号: B01D59/34 B01D59/00

    CPC分类号: B01D59/34

    摘要: A method of producing carbon--13 by multiphoton decomposition of C.sub.3 F.sub.6, said material containing carbon--12 and carbon--13 isotopic species, comprising irradiating gaseous C.sub.3 F.sub.6 in a reaction chamber at a pressure below 10 Torr with a laser beam at a frequency in the range of 950 to 1020 wavenumbers and providing a minimum fluence of 1 joules per sq. cm. and passing the material through a physical separation stage to obtain a .sup.13 C.sub.2 F.sub.4 product.

    摘要翻译: 一种通过C3F6的多光子分解生产碳-13的方法,所述材料含有碳-12和碳-13同位素物质,其包括在压力低于10托的反应室中以一定频率的激光束照射气态C 3 F 6 950至1020个波数,并提供1焦耳/平方厘米的最小注量。 并使材料通过物理分离阶段以获得13C2F4产品。

    Production of carbonyl fluoride
    4.
    发明授权
    Production of carbonyl fluoride 失效
    生产碳酰氟

    公开(公告)号:US4447304A

    公开(公告)日:1984-05-08

    申请号:US350742

    申请日:1982-02-22

    CPC分类号: C01B31/00 B01J19/121

    摘要: A method of producing carbonyl fluoride by multiphoton decomposition of carbon dioxide-sulphur hexafluoride mixtures comprising irradiating gaseous carbon dioxide-sulphur hexafluoride mixtures in a reaction chamber at a pressure in the 10-50 Torr range with a laser beam at a frequency of about 944 wavenumbers and passing the material from the reaction chamber after irradiation through a chemical processing stage to obtain a carbonyl fluoride product.

    摘要翻译: 一种通过二氧化碳 - 六氟化硫混合物的多光子分解生产碳酰氟的方法,包括在10-50乇范围内的压力下用激光束以约944个波数的频率照射反应室中的气态二氧化碳 - 六氟化硫混合物 并通过化学处理阶段将辐射后的材料从反应室送出,得到碳酰氟产物。