Zeolite Supported Cobalt Catalysts for Sodium Borohydride Hydrolysis

2014 ◽  
Vol 490-491 ◽  
pp. 213-217 ◽  
Author(s):  
Manna Joydev ◽  
Roy Binayak ◽  
Sharma Pratibha
Keyword(s):  
Fuel Cell ◽  
Reaction Kinetics ◽  
Sodium Borohydride ◽  
Cobalt Catalysts ◽  
Hydrogen Release ◽  
Hydrolysis Reaction ◽  
Fuel Cell Vehicle ◽  
Zeolite X ◽  
Supported Cobalt Catalysts ◽  
Kinetics Of

Sodium borohydride hydrolysis is one of the promising methods for the supply of hydrogen on-board in fuel cell vehicle. A suitable catalyst is required to control the hydrogen release from stable alkaline sodium borohydride solution. The present paper reports the effect of Co (II) doped zeolite-X and K-chabazite catalysts in sodium borohydride hydrolysis reaction. Kinetics of the hydrolysis reaction was observed to get enhanced by the use of these catalysts. Activation energies for Co (II) doped K-chabazite and zeolite-X are found to be 30.7 and 48 kJ mol-1, respectively.

Evaluating the interfacial reaction kinetics of the bipolar membrane interface in the bipolar membrane fuel cell

2013 ◽  
Vol 15 (27) ◽  
pp. 11217 ◽  
Author(s):  
Sikan Peng ◽  
Shanfu Lu ◽  
Jin Zhang ◽  
Pang-Chieh Sui ◽  
Yan Xiang
Keyword(s):  
Fuel Cell ◽  
Reaction Kinetics ◽  
Interfacial Reaction ◽  
Membrane Interface ◽  
Bipolar Membrane ◽  
Kinetics Of

scholarly journals Kinetic investigation of the hydrolysis of uranium hexafluoride gas

RSC Advances ◽  
2020 ◽  
Vol 10 (57) ◽  
pp. 34729-34731
Author(s):  
Jason M. Richards ◽  
Leigh R. Martin ◽  
Glenn A. Fugate ◽  
Meng-Dawn Cheng
Keyword(s):  
Reaction Kinetics ◽  
Direct Observation ◽  
Uranium Hexafluoride ◽  
Low Pressure ◽  
Hydrolysis Reaction ◽  
Kinetic Investigation ◽  
Kinetics Of ◽  
Hydrolysis Of

Direct observation of the hydrolysis reaction kinetics of gaseous UF6 have been measured under low-pressure conditions.

Hydrolysis Rate Improvement in Hydrogen Generation System Fueled by Powdery Sodium Borohydride for Fuel-Cell Vehicle

2014 ◽  
Vol 50 (4) ◽  
pp. 2741-2748 ◽  
Author(s):  
Keisuke Tomoda ◽  
Nobukazu Hoshi ◽  
Junnosuke Haruna ◽  
Meifen Cao ◽  
Atsuhiro Yoshizaki ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Sodium Borohydride ◽  
Hydrogen Generation ◽  
Fuel Cell Vehicle ◽  
Hydrolysis Rate ◽  
Generation System ◽  
Rate Improvement

Kinetics of CH4Decomposition on Supported Cobalt Catalysts

1998 ◽  
Vol 176 (1) ◽  
pp. 115-124 ◽  
Author(s):  
J.Soltan Mohammad Zadeh ◽  
Kevin J. Smith
Keyword(s):  
Cobalt Catalysts ◽  
Supported Cobalt Catalysts ◽  
Kinetics Of

The Safety of Hydrogen Release and Discharge From a Fuel Cell Vehicle

2009 ◽  
Author(s):  
JongSung Kim ◽  
SungHo Lee ◽  
InChul Hwang ◽  
TaeWon Lim
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Fuel Cell ◽  
Hydrogen Sensor ◽  
Hydrogen Release ◽  
Fuel Cell Vehicle ◽  
Hydrogen Sensors ◽  
Sensor Locations

The safety of hydrogen release and discharge from a fuel cell vehicle was evaluated using CFD (Computational Fluid Dynamics) tests in various situations. First, the validity of the locations of the hydrogen sensors installed in Hyundai fuel cell vehicle and the workshop were tested. In addition, the discharge tests of the fuel cell vehicle based on SAE J2578 were conducted in non-ventilated, ventilated and outdoor modes. Through these tests, it was verified that the hydrogen sensor locations are suitable for the detection of hydrogen leakage and SAE J2578 regulation is satisfied in the fuel cell vehicle.

A COMPARISON OF THE EFFECTS OF SODIUM BOROHYDRIDE-BASED HYDROGEN STORAGE SYSTEM AND COMPRESSED HYDROGEN STORAGE TANK ON THE FUEL CELL VEHICLE PERFORMANCE

2021 ◽  
pp. 1-13
Author(s):  
Ceren Yüksel Alpaydin ◽  
Can Ozgur Colpan ◽  
Mustafa Umut Karaoglan ◽  
Senem Karahan Gülbay
Keyword(s):  
Fuel Cell ◽  
Hydrogen Storage ◽  
Sodium Borohydride ◽  
Storage System ◽  
Fuel Cell Vehicle ◽  
Manufacturing Cost ◽  
Compression Process ◽  
Power Requirement ◽  
Hydrogen Storage System ◽  
Compressed Gas

Abstract Thanks to its features such as being harmless to the environment, not creating noise pollution, and reducing oil dependence, many countries have started promoting the use of fuel cell vehicles (FCVs) and making plans on enhancing their hydrogen infrastructure. One of the main challenges with the FCVs is the selection of an effective hydrogen storage unit. Compressed gas tanks are mostly used as the hydrogen storage in the FCVs produced to date. However, the high amount of energy spent on the compression process and the manufacturing cost of high-safety composite tanks are the main problems to be overcome. Among different storage alternatives, boron compounds, which can be easily hydrolyzed at ambient temperature and pressure to produce hydrogen, are promising hydrogen storage materials. In this study, a 700-bar compressed gas tank and a sodium borohydride (NaBH4)-based hydrogen storage system are compared for a passenger fuel cell vehicle in terms of the range of the vehicle. The energy storage and production system of the FCV were modeled in MATLAB Simulink® environment coupling the modeling equations of each component after finding the power requirement of the vehicle through vehicle dynamics. Then, the simulations were performed using the speed profile of the New European Drive Cycle (NEDC) and the acceleration requirements. According to the simulation results, the NaBH4-based hydrogen storage system provided a 4.42% more range than the compressed gas tank.

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