Search Results

You are looking at 1 - 5 of 5 items for :

  • "sustainable chemistry" x
  • Chemistry and Chemical Engineering x
  • All content x
Clear All

While continuous-flow chemistry is steadily increasing its footprint in academic research and in the manufacturing of pharmaceutical intermediates and fine chemicals, the attention for flow chemistry in educational programs is on average rather limited. This account is meant to provide a personal overview of the possibilities to address the involvement of flow chemistry in the various stages of chemical education.

Open access
Journal of Flow Chemistry
Authors: Gellért Sipos, Viktor Gyollai, Tamás Sipőcz, György Dormán, László Kocsis, Richard V. Jones, and Ferenc Darvas

Abstract

The atom economy concept is one of the earliest recognition for green and sustainable aspects of organic synthesis. Over the years, novel technologies emerged that made this important feature of reactions into practice. Continuous-flow devices increased the efficiency of the chemical transformations with novel process windows (high T, high p and heterogeneous packed catalysts etc.) and increased safety which turned the attention to reexamine old, industrial processes. Oxidation can be performed under flow catalytic conditions with molecular oxygen; alcohols can be oxidized to carbonyl compounds with high atom economy (AE = 87 %). Using O2 and 1 % Au/TiO2, alcohol oxidation in flow was achieved with complete conversion and >90 % yield. N-alkylation is another good example for achieving high atom economy. Under flow catalytic conditions (Raney Ni), amines were successfully reacted with alcohols directly (AE = 91 %) with >90 % conversion and selectivity. In both examples, the effective residence time was less than 1 min. These two examples demonstrate the significant contribution of flow technology to the realization of key principles in green and sustainable chemistry.

Restricted access

References 1. (a) Microwave Heating as a Tool for Sustainable Chemistry, Leadbeater, N. E., Ed.; CRC Press: Boca Raton, FL, 2011 (b

Restricted access

waste: an example of cocoa butter triglyceride ” C. Schotten , D. Plaza , S. Manzini , S. P. Nolan , S. V. Ley , D. L. Browne , A. Lapkin ACS Sustainable Chemistry & Engineering 2015 , 3 , 1453 – 1459 “ Construction of 2

Restricted access

M , Hornoiu C , Postole G , Dragan M , Carata M , Ionescu NI , Petre A , Auroux A ( 2001 ) Catalysis for sustainable chemistry: structure, processes and industrial applications . In: Bonev C , Petrov L (eds) Proceedings of

Restricted access