Small range 文档类型:"4"

Totally found 9 items.

  • [专利] (US20200255362) Process for recovering close boiling products
    (US20200255362) The disclosure is directed to a method for recovering products from a fermentation broth. The disclosure relates to the use of extractive distillation and/or dehydration to recover products which have close boiling points, such as ethanol and isopropanol, from a fermentation broth. In an embodiment, the recovery of product is completed in a manner that minimizes stress on the microbial biomass, such that it remains viable, at least in part, and may be recycled and reused in the fermentation process, which may result in increased efficiency in the fermentation process. The extractive distillation vessel and/or dehydration reactor may be used downstream of a distillation vessel. To minimize stress on the microbial biomass the distillation vessel may be under vacuum. The extractive distillation vessel may be used alongside a separation vessel such that the separation vessel is capable of recycling extractive distillation agent.
  • [专利] 一种石墨烯基阻燃耐热剑麻纤维素薄膜的制备方法
    本发明公开了一种石墨烯基阻燃耐热剑麻纤维素薄膜的制备方法。以季戊四醇、三氯氧磷、三聚氰胺制备双螺磷三聚氰胺盐;在烧瓶中加入N‑甲基咪唑、氯代烷,在N2保护下于60℃反应48h后,将温度冷却至室温静置2h;加入蒸馏水并升温至70℃;再取双螺磷三聚氰胺盐加入其中,恒温70℃反应1h,并加入15~100 mg去质子剂。待反应结束后,冷却至室温再在0℃下静置48h。过滤,结晶产物用蒸馏水洗涤直至滤液呈中性。在60℃下烘干得到带电子的五元环阻燃剂;取20g剑麻纤维,5g氯乙酸制备剑麻纤维素纳米微晶;取0.02~0.08g的石墨烯,将其分散在蒸馏水中,再加入0.1~0.3g五元环阻燃剂,将混合液在70℃下超声反应1.5h,待反应结束后,抽滤成膜,即制得石墨烯基阻燃耐热剑麻纤维素薄膜。
  • [专利] 一种正己基锂的制备方法
    本发明公开了一种正己基锂的制备方法,包括如下步骤:(1)在惰性气体的保护下,将锂片放置于惰性溶剂中,加热搅拌使所述的锂片分散,冷却后除去所述惰性溶剂,得到锂分散体;(2)在惰性气体保护下,向步骤(1)得到的锂分散体中加入液态烃溶剂,再加入催化量的L-脯氨酸,搅拌条件下升温回流,滴加氯代正己烷进行反应,反应完全后经处理得到所述的正己基锂的溶液。本发明中,所加入催化剂L-脯氨酸与锂进行配位后,提高了产物的收率,减少了副反应的发生。
  • [专利] 一种1-己基-3-甲基咪唑六氟磷酸盐离子液体的制备及含有该离子液体的难燃液压油
    本发明属于难燃液压油领域,涉及绿色环保全合成难燃液压油,尤其涉及一种1‑己基‑3‑甲基咪唑六氟磷酸盐离子液体的制备及含有该离子液体的难燃液压油。其离子液体的制备,主要包括1‑己基‑3‑甲基咪唑的制备和六氟磷酸盐离子液体的制备两部分;难燃液压油则是将该离子液体与极压抗磨剂、抗氧剂、防腐剂、降凝剂以及消泡剂进行混合。使得本发明中所合成的难燃液压油具有高闪点、高燃点、低蒸发损失、高粘度指数、优异的润滑性能、无毒、可生物降解和良好材料适用性。
  • [专利] (CN111057007) 一种基于双核结构的功能化离子液体及其制备方法和其降解木质纤维素的使用方法
    (CN111057007) 一种基于双核结构的功能化离子液体及其制备方法和其降解木质纤维素的使用方法,属于化学工程技术领域。 本申请制备的离子液体同时含有[PF6]ˉ或[N(CF3SO2)2]ˉ疏水性基团和Clˉ或Brˉ亲水性基团,在不同温度条件下,离子液体与水的溶解度不同。 因此,可以通过调节温度与水量来控制离子液体与水的溶解度,使其在80℃以上可以与水互溶,在室温及其以下温度与水不溶,来解决现有离子液体降解生物质木质纤维素制备还原糖后,产物还原糖水溶液与离子液体水溶液难以分离的问题,提高离子液体的回收和重复使用效率。 此外,该离子液体还具有酸性催化功能,能够催化木质纤维素降解为还原糖、提高还原糖产率等优点。
  • [专利] 一种1?己基?3?甲基咪唑六氟磷酸盐离子液体的制备及含有该离子液体的难燃液压油
    本发明属于难燃液压油领域,涉及绿色环保全合成难燃液压油,尤其涉及一种1?己基?3?甲基咪唑六氟磷酸盐离子液体的制备及含有该离子液体的难燃液压油。其离子液体的制备,主要包括1?己基?3?甲基咪唑的制备和六氟磷酸盐离子液体的制备两部分;难燃液压油则是将该离子液体与极压抗磨剂、抗氧剂、防腐剂、降凝剂以及消泡剂进行混合。使得本发明中所合成的难燃液压油具有高闪点、高燃点、低蒸发损失、高粘度指数、优异的润滑性能、无毒、可生物降解和良好材料适用性。
  • [专利] Microbiocidal 1-[1-(alkoxyphenyl)vinyl]-1h-imidazoles
    (US4584311) Imidazole derivatives of general formula (I) and acid addition salts thereof, which are useful as industrial microbicides. (Chemical Structure image '1' not included in text) wherein R represents a linear or branched alkyl group having 6 to 9 carbon atoms.
  • [专利] Methods and compositions for regulating plant growth using piperazine compounds
    (US4057413) Piperazine derivatives of the general formula (Chemical Structure image '1' not included in text) in which R1, R2, and R3, independently of one another, are each optionally substituted alkyl, optionally substituted alkenyl, alkynyl, cycloalkyl or aralkyl which is optionally substituted in the aryl part, and N IS 0, 1, 2, 3, OR 4, EXHIBIT POWERFUL PLANT GROWTH-REGULATING PROPERTIES.
  • [专利] Catalytic disproportionation of pentane using ionic liquids
    (US20150329444) Processes for the disproportionation and isomerization of a C5 hydrocarbon feed using a liquid catalyst comprising an ionic liquid and a carbocation promoter are described. The ionic liquid is unsupported, and the reactions occur at temperatures below about 200° C.
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