Method of preparing zsm-5 using variable temperature without organic template
    63.
    发明申请
    Method of preparing zsm-5 using variable temperature without organic template 失效
    使用不含有机模板的变温制备zsm-5的方法

    公开(公告)号:US20060111234A1

    公开(公告)日:2006-05-25

    申请号:US10540717

    申请日:2003-12-22

    IPC分类号: B01J29/04

    摘要: Disclosed is a method of preparing ZSM-5 having substantially 100% crystallinity by using variable temperatures in the absence of an organic template, characterized in that a reaction mixture having a molar composition of M2O/SiO2 (M: alkali metal ion) of 0.07-0.14, H2O/SiO2 of 15-42 and SiO2/Al2O3 of 20-100 is nucleated at relatively high temperatures (180-210° C.) and then crystallized at relatively low temperatures (130-170° C.), thus easily controlling a crystal size and a particle size distribution of the ZSM-5.

    摘要翻译: 公开了一种通过在不存在有机模板的情况下使用可变温度制备具有基本上100%结晶度的ZSM-5的方法,其特征在于具有摩尔组成为M 2 O / SiO 2的反应混合物, 0.07〜0.14的N 2 O 2(M:碱金属离子),15〜42的H 2 O / SiO 2 和SiO 2, 20-100的较高温度(180-210℃)成核,然后在相对低的温度(130℃)下结晶, 170℃),因此容易控制ZSM-5的晶体尺寸和粒度分布。

    Method of preparing optically pure (R) - or (S) - tetrahydrofuranyl ketone
    65.
    发明申请
    Method of preparing optically pure (R) - or (S) - tetrahydrofuranyl ketone 失效
    制备光学纯的(R) - 或(S) - 四氢呋喃酮的方法

    公开(公告)号:US20030114693A1

    公开(公告)日:2003-06-19

    申请号:US10290734

    申请日:2002-11-08

    申请人: SK CORPORATION

    IPC分类号: C07D307/02

    CPC分类号: C07D307/12

    摘要: Disclosed is a method of preparing an optically pure (R)- or (S)-tetrahydrofuranyl ketone. By such a method, (R)- or (S)-2-tetrahydrofuran amide is converted to (R)- or (S)-2-tetrahydrofuran nitrile through dehydration in the presence of a dehydrating agent and an amine base. Then, thus prepared (R)- or (S)-2-tetrahydrofuran nitrile is nucelophilic addition-reacted with a nucleophile, followed by hydrolyzing, thereby produce (R)- or (S)-tetrahydrofuranyl ketone having high optical purity, while minimizing production of other by-products.

    摘要翻译: 公开了一种制备光学纯的(R) - 或(S) - 四氢呋喃酮的方法。 通过这样的方法,在脱水剂和胺基的存在下,通过脱水将(R) - 或(S)-2-四氢呋喃酰胺转化为(R) - 或(S)-2-四氢呋喃腈。 然后,将这样制备的(R) - 或(S)-2-四氢呋喃腈与亲核试剂进行亲核加成反应,然后水解,从而制得具有高光学纯度的(R) - 或(S) - 四氢呋喃酮,同时使 生产其他副产品。