The possibility of using the cation-exchange resin Lewatit K2420 as a catalyst for synthesis 1,3-butadiene from isopropyl alcohol and formaldehyde solution in one technological stage has been shown. regularities process have established influence form (a cyclic trimer 1,3,5-trioxane 37% water) on composition reaction mass yield main by-products assessed. It shown that heterogeneous showed catal...

Abstract The aldol reaction of bio acetone in presence a strongly basic ion exchange resin was carried out with and without the addition water temperature range between ? 30 °C 45 °C. conversion, selectivity service time resins were investigated stirred batch reactor continuous fixed bed reactor. For experiments, both conversion increased decreasing temperature. Furthermore, to medium has posit...

Abstract Herein, the catalytic performance of palladium nanoparticles grafted on polymeric TSNH 2 (Tentagel-S-NH ) resin was investigated for continuous-flow liquid-phase hydrogenation two industrially relevant chemicals: 2-methyl-3-butyn-2-ol and nitrocyclohexane. We effect process parameters such as temperature pressure PdTSNH activity selectivity. Depending reaction conditions, well-disperse...

This paper argues that innovation can be best understood as an information process which is then concretized as a product that meets demand. Two very different firms, Canon Inc. and Apple Computer Inc., are used as case study illustrations. Innovation does not proceed through logical deduction, but rather is furthered by the use of metaphors and analogies. The bureaucratic and staid structures ...

The observation of Manchot? that sodium pentacyano-ammineferroate2 I absorbs oxygen has led Baudisch and his coworkers3 to study the catalytic action of this salt, as well as of its water analogue II, in the oxidation of pyrimidines and purines. The present authors have previously reported in this journal4 on the nature of the oxidation products obtained. In the present paper the problem is con...

kinetics of radical polymerizations of waterborne alkyd/acrylic hybrid resin via batch mini-emulsion technique was studied using redox initiators (tbhp/fe2+/edta/asac  and  tbhp/fe2+/edta/sfs) at relatively low temperatures and thermal initiators (bpo, kps and aibn) at higher temperatures to seek the most suitable initiator system. at the end of all reactions the unreacted monomer content was r...