PROCESS FOR FORMALDEHYDE MANUFACTURE
    3.
    发明公开

    公开(公告)号:US20230271910A1

    公开(公告)日:2023-08-31

    申请号:US18040738

    申请日:2021-10-13

    IPC分类号: C07C45/38

    CPC分类号: C07C45/38 C07C2523/881

    摘要: A process for the production of formaldehyde from methanol comprising the steps of: feeding to a reactor a feed stream comprising the methanol and an oxygen-containing gas; reacting the methanol in the gas phase with the oxygen-containing gas in the reactor in the presence of a catalyst comprising oxides of iron and molybdenum; and recovering a formaldehyde reactor outlet stream from the reactor, the formaldehyde reactor outlet stream comprising formaldehyde and carbon monoxide. The catalyst comprises copper in an amount of at least 0.025 wt %, or at least 0.05 wt %, of the catalyst and in that the molar ratio of carbon monoxide to formaldehyde in the formaldehyde reactor outlet stream is at least 5% less than the molar ratio of carbon monoxide to formaldehyde in the formaldehyde reactor outlet stream in the same process using a catalyst containing essentially no copper.

    MULTIFUNCTIONAL POROUS ARAMIDS (AEROGELS) AND FABRICATION THEREOF
    10.
    发明申请
    MULTIFUNCTIONAL POROUS ARAMIDS (AEROGELS) AND FABRICATION THEREOF 有权
    多功能多糖(AEROGELS)及其制造方法

    公开(公告)号:US20150111976A1

    公开(公告)日:2015-04-23

    申请号:US14529823

    申请日:2014-10-31

    摘要: The present disclosure provides a series of new and improved porous polyamide aerogels derived from multifunctional aromatics that combine the high mechanical strength of aramids with the pore structure of aerogels. The polyamide aerogels have a hyperbranched structure, relatively low density, high porosity and may be derived from functionalized monomers having more aromatic groups than functional groups. The present disclosure also provides a new method for producing the porous polyamide aerogels by polymerizing an aromatic multifunctional carboxylic acid or a ferrocene multifunctional carboxylic acid with a polyfunctional aromatic isocyanate at moderate reaction conditions followed by drying with liquid CO2. Also disclosed are various methods of use of these polyamide aerogels in a variety of applications.

    摘要翻译: 本公开提供了一系列新的和改进的多功能芳烃衍生的多孔聚酰胺气凝胶,其将芳族聚酰胺的高机械强度与气凝胶的孔结构相结合。 聚酰胺气凝胶具有超支化结构,相对低密度,高孔隙率,并且可以衍生自具有比官能团更多的芳族基团的官能化单体。 本公开还提供了一种通过在中等反应条件下将芳族多官能羧酸或二茂铁多官能羧酸与多官能芳族异氰酸酯聚合并随后用液体CO 2干燥来生产多孔聚酰胺气凝胶的新方法。 还公开了这些聚酰胺气凝胶在各种应用中的各种使用方法。