Results 61 to 70 of about 17,830 (242)

Polymeric Sorbents as Energy‐Efficient Alternative to Cryogenic Distillation for Light Hydrocarbon Purification

Advanced Materials, EarlyView.
The transition from cryogenic distillation to polymeric sorbents for light hydrocarbon purification is crucial for energy and environmental sustainability. The polymeric sorbents are engineered to separate gas mixtures based on their specific properties.
Kelechi Festus, Ankit Mondal, Suman Mandal, Jazmine Aiya D. Marquez, Arnab Ghosh, Aishi Sikdar, Urme Podder, Ahana Sarkar, Qingsheng Wang, Hong‐Cai Zhou   +9 more
wiley   +1 more source

Oligomerization of propene over ZSM-5 modified with Cr and W

Revista Facultad de Ingeniería Universidad de Antioquia, 2013
In this paper, the composition of ZSM-5 was modified with Cr and W by impregnation, isomorphous substitution and ion exchange, and the resulting catalysts were evaluated in the oligomerization of propene.
Alejandra María Santa Arango, Carlos Mario Escobar Garcés, José Luís Agudelo Valderrama, Alexander Guzmán Monsalve, Luz Amparo Palacio Santos, Adriana Echavarría Isaza   +5 more
doaj   +1 more source

Fast Hydrogel Micro‐Actuators Driven by Electric Fields

Advanced Materials, EarlyView.
We report the fabrication of chemically programmable electroactuating microstructures through the first integration of two‐photon polymerization with electrically actuated gelatin methacrylate‐based hydrogels. By tailoring the charge of the polymer network, we demonstrate programmable polarity‐dependent bending, enabling microstructures that ...
Annaël Sort‐Montenegro, Jason M. Delente, Žiga Roblek, Yekaterina Tskhe, Luke Dowling, Colm Delaney, Larisa Florea   +6 more
wiley   +1 more source

Light alkane (mixed feed) selective dehydrogenation using bi-metallic zeolite supported catalyst

Bulletin of the Chemical Society of Ethiopia, 2009
Light alkanes are the important intermediates of many refinery processes and their catalytic dehydrogenation gives corresponding alkenes. The aim behind this experimentation is to investigate reaction behavior of mixed alkanes during direct catalytic ...
Zeeshan Nawaz, Qing Shu, Shahid Naveed, Fei Wei   +3 more
doaj  

Direct synthesis of propene oxide from propene, hydrogen and oxygen in a catalytic membrane reactor

, 2014
The direct gas-phase epoxidation of propene in a catalytic membrane reactor has been investigated. Powdered Au/Ti-SiO2 catalyst pressed into a disc was used as a membrane contactor, allowing different feeding of the reactants and providing resistance to ...
Kertalli, E., Schouten, J.C., Perez Ferrandez, D.M., Nijhuis, T.A.   +3 more
core   +1 more source

Upscaling the Fabrication of Rod‐Shaped Microgels: A Microfluidic Method Combining Step‐Emulsification With Consecutive Droplet Confinement in Parallelized Microchannels

Advanced Materials, EarlyView.
A microfluidic method is presented which enables parallelized fabrication of rod‐shaped microgels, based on step‐emulsification (SE) droplet generation and subsequent droplet distribution and confinement, combined in a single device. Microgel rods are fabricated in parallel at different flow rates based on two light‐mediated crosslinking chemistries ...
Matthias Mork, Ninon Möhl, Greta Romahn, Laura Klasen, Cédric Bergerbit, Laura De Laporte   +5 more
wiley   +1 more source

Current‐Induced Domain Wall Dynamics in Pt/Co/Ni/Co Nanoribbons With Curvilinear Cross‐Sections

Advanced Materials, EarlyView.
3D curvilinear magnetic racetrack nanoribbons are formed with concave and convex cross‐sections using an advanced multi‐photon 3D printer. The curvature is shown to strongly affect current‐induced domain wall motion along the nanoribbons. In nanoribbons with cross‐sections that have both concave and convex segments, the velocities of domain walls with ...
Tiange Dong, Jitul Deka, Chi Fang, André M. A. Farinha, Yicheng Guan, See‐Hun Yang, Stuart S. P. Parkin   +6 more
wiley   +1 more source

Engineering three-layer core–shell S-1/TS-1@dendritic-SiO2 supported Au catalysts towards improved performance for propene epoxidation with H2 and O2

Green Energy & Environment, 2020
The advocacy of green chemical industry has led to the development of highly efficient catalysts for direct gas-phase propene epoxidation with green, sustainable and simple essence.
Zhaoning Song, Juncong Yuan, Zhenping Cai, Dong Lin, Xiang Feng, Nan Sheng, Yibin Liu, Xiaobo Chen, Xin Jin, De Chen, Chaohe Yang   +10 more
doaj   +1 more source

Spectroscopic evidence for the adsorption of propene on gold nanoparticles Spectroscopic evidence for the adsorption of propene on gold nanoparticles [PDF]

, 2008
The adsorption of propene on supported gold nanoparticles has been experimentally identified as a reaction step in the hydro-epoxidation of propene. This new finding was made possible by applying a detailed analysis of in situ measured XANES spectra. For
Beale, A.M., Heterogene katalyse en oppervlakteonderzoek, Sacaliuc, E., Schouten, J.C., Katalyse en spectroscopie, Weckhuysen, B.M., van der Eerden, A.M.J., Dep Scheikunde, Nijhuis, T.A.   +8 more
core  

Catalytic cracking of 1-butene to propene and ethene on MCM-22 zeolite

, 2005
Catalytic cracking of butene to propene and ethene was investigated over HMCM-22 zeolite. The performance of HMCM-22 zeolite was markedly influenced by time-on-stream (TOS) and reaction conditions.
Xu, LY, 徐龙伢, Zhu, XX, Xie, SJ, Song, YQ, Liu, SL   +5 more
core   +1 more source