Electric Production of High-quality Fuels via Electron Beam Irradiation at Ambient Conditions

2021 ◽  
Author(s):  
Kunpeng Wang ◽  
David Staack

Production of high-quality fuels and petrochemicals are both energy and emission intensive with traditional methods. Thermal activation of reactions by catalysts or high temperature and pressure or both are very...

2013 ◽  
Vol 378 ◽  
pp. 372-375 ◽  
Author(s):  
Masayoshi Ichimiya ◽  
Phuong Le Quang ◽  
Masaaki Ashida ◽  
Tadashi Itoh

Author(s):  
Charles Seeley ◽  
Jeff Fortin ◽  
Todd Wetzel ◽  
Scott Sealing ◽  
Keith Fosen

There is a need for small valves which control flow at high temperature and pressure for a number of commercial and military applications. However, traditional solenoid actuated valves are typically expensive, heavy and subject to undesirable electrical and mechanical failure modes. Micromachining techniques, commonly used in the electronics industry, are finding more and more applications for Micro Electro Mechanical Systems (MEMS). Most of the previous work in the area of MEMS valves has been limited to low pressure/low temperature flows at ambient conditions. In this presentation, the development and testing of a two stage MEMS diaphragm valve that is capable of operating at high temperature and pressure gas flows is presented. Valve requirements, tolerances and thermal management are considered in the design. Valve fabrication processes, such as Reactive Ion Etching (RIE) and laser ablation, are discussed in detail. Issues related to the actuation of the microvalve are also discussed, including two approaches based on shape memory alloy and piezoelectric materials. Modeling and test results are presented throughout to identify successes and lessons learned.


RSC Advances ◽  
2015 ◽  
Vol 5 (126) ◽  
pp. 104502-104508 ◽  
Author(s):  
M. Kang ◽  
D. H. Lee ◽  
J. Yang ◽  
Y.-M. Kang ◽  
H. Jung

Nitrogen-doped graphenes were successfully obtained by electron beam irradiation from graphite oxide colloid solution in the presence of aqueous ammonia at room temperature under ambient conditions.


2015 ◽  
Vol 786 ◽  
pp. 63-67
Author(s):  
Tiam Ting Tee ◽  
Soo Tueen Bee ◽  
Tin Sin Lee ◽  
Chantara Thevy Ratnam ◽  
Haraveen Kaur Jogindar Singh

In this research study, the effect of aging duration time and electron beam irradiation dosages on the hot set results of copper (II) oxide added LDPE composites have been investigated. The addition of copper (II) oxide particles in LDPE matrix has significantly reduced the formation of crosslinking networks in LDPE matrix by blocking the mobility of free radicals generated by electron beam irradiation. At lower irradiation dosages (< 100 kGy), all the copper (II) oxide added LDPE composites were immediately failed the hot set test when subjected to static load of 20 N/cm2 under high temperature. Besides, the occurrence of copper (II) oxide particles in LDPE matrix also reduced the matrix continuities of copper (II) oxide added LDPE composites and caused the matrix resistance ability of LDPE matrix to be decreased. The increasing of irradiation dosages has significantly delayed the failing time of all LDPE composites when under static load at high temperature. This is because the increasing of electron beam irradiation could further induce the generation of free radicals to form higher degree of crosslinking networks in LDPE matrix. At higher irradiation dosage up to 250 kGy, the pristine LDPE was observed able to withstand the applied static load under high temperature more than 15 minutes. This is due to higher degree of crosslinking networks formed in LDPE matrix could effectively restrict the mobility of LDPE chains under static load and thus delay the failing of sampels. When the aging duration time increased from 4 days to 14 days, the resistance ability of all LDPE has been significantly weakened due to the occurrence of chain scissioning process in LDPE matrix by delaying the failing time of samples.


2011 ◽  
Vol 17 (S2) ◽  
pp. 1502-1503
Author(s):  
H Floresca ◽  
S Mick ◽  
N Lu ◽  
J Wang ◽  
M Kim

Extended abstract of a paper presented at Microscopy and Microanalysis 2011 in Nashville, Tennessee, USA, August 7–August 11, 2011.


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