最初反应是用t-BuOOH做的氧化,考虑到过氧化物的安全性和成本,改用连续流进行工艺开发。作者对比了两种连续流的方法: tube in tube vs gas-liquid segmented system。管套管(tube in tube)是这样的,需要用到Teflon AF-2400管。这个管透气性比较好,不过,某宝没有。注意是液气走的Teflon AF-2400内管,液气...
如上图所示,透气膜式(tube-in-tube)反应器装置由一根透气的聚四氟乙烯AF-2400膜管(内管)组成,该膜管固定在较大的不透气管(外管)内。这些管子由T型件分隔开,允许两个通道的独立输送,只有气态物料可以通过膜,这些气体反应物料可以在液相中与底物反应,也可以简单地使溶剂饱和以供后续使用。富临塑胶供应T...
根据表 1 第 4 项中的条件,我们对工艺的范围进行了评估。由于 Tubein Tube 反应器/注入器中聚四氟乙烯外管和不锈钢连接器之间的压接接头是非标准的(通常接头是在同类材料之间制造的),我们决定,由于 CO 的高毒性和无味特性,最初在 7 巴的压力下进行制备反应。在后来的一些反应中,当我们确信互联装置非常...
透光率高达90%,适合需要透明或光学监测的场景。机械强度优异,耐高温(长期使用温度可达240°C以上)且抗形变能力强。生物相容性 无细胞毒性,适用于生物医疗或制药领域。典型应用场景 流动化学与微反应器 用于构建管中管(tube-in-tube)反应器,实现气液高效接触,提升传质效率23。在连续流工艺中,支持异相催化加...
BROWNE D L, O'BRIEN M, KOOS P, et al.Continuous- flow processing of gaseous ammonia using a Teflon AF- 2400 tube-in-tube reactor:synthesis of thioureas and in- line titrations[ J] .Synlett,2012, (9) : 1 402-1 406.Duncan L. Browne,Matthew O'Brien,Peter Koos,Philippa B. ...
(2012) Continuous-flow processing of gaseous ammonia using a Teflon AF-2400 tube-in-tube reactor: Synthesis of thioureas and in-line titrations. Synlett 23(9): 1402-1406.Browne, D. L.; O'Brien, M.; Koos, P.; Cranwell, P. B.; Polyzos, A.; Ley, S. V., Continuous-Flow ...
Abstract : Composite membranes with an internal thin perfluorated polymer film were prepared by coating a suit2 able porous ceramic tube with Teflon AF2400 solution. Degassing performance of the composite membrane was tested and compared with that of GP100 module and PI film. The results show th...
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The neighbouring vehicles calculate the tube and are not allowed to enter that region. Feasibility, stability, and performance of the proposed fault tolerant DRHC are also investigated. Finally, a bandwidth allocation algorithm is proposed in order to optimize the communication periods so that the ...
The device comprises a conduit connected to a suction source and means for replacing the bobbin with a yarn winding tube. This suction conduit is carried to move its suction inlet between ... G Courvoisier - US 被引量: 14发表: 1977年 加载更多...