dense membranes for hydrogen seperation and purification

... advances in both dense phase metal and porous ceramic membranes, and compare their separation properties and performance in membrane reactor systems in particular for natural gas reforming and the water ... comparing the performance of these porous membranes with Palladium membranes, e.g., in a membrane reactor for the steam reforming, dense membranes showed a better performance The mesoporous membranes ... applications of these membranes to membrane reactors for hydrogen production In this article, we focus our review on the inorganic membranes systems for hydrogen separation and for membrane reactors...

Ngày tải lên: 13/05/2014, 01:01

... showered me with love and joy, and has made my life as a graduate student colorful and enjoyable Thank you both for always being there for me and for telling me what I need to hear and not what I want ... infrastructure for the storage and distribution of hydrogen, natural gas is often seen as a bridging fuel source towards a hydrogen- based economy The projected growth in the demand for hydrogen and natural ... change debate and the use of natural gas and hydrogen is recommended to alleviate global warming Membrane technology is a promising purification technique for hydrogen enrichment and natural gas...

Ngày tải lên: 14/09/2015, 08:39

... material design principles for hydrogen purification 35 2.2 H2-selective polymeric membranes for hydrogen purification 36 2.3 CO2-selective polymeric membranes for hydrogen purification 40 2.4 ... Polybenzimidazole based membranes for gas separation 41 2.5 ZIFs based crystalline membranes and mixed matrix membranes 44 2.6 Particle synthesis and dispersion methods for mixed matrix membranes ... 23], carbon [2426], zeolite [27], MOF [28-30] and others (e.g oxide [31] and glass [32]) For dense metallic membranes (e.g Pd and Pt membranes) , hydrogen is transported 10 through a modified...

Ngày tải lên: 09/09/2015, 10:15

... processes and technologies……………………………….1 1.2 Membranes for gas separation……………………………………………2 1.3 Modification of polymeric membranes for gas separation……………….8 CHAPTER TWO: BACKGROUND AND LITERATURE ... pressure of atm and 35 oC…………………………………………110 Table 7.1 Young’s modulus and hardness of the hybrid membranes ……126 Table 7.2 Pure H2, N2 and CO2 permeation results for PEA:POSS 30:70 and 50:50, tested ... energy for pure gas permeation for the hybrid membranes ……………………………………………………………….128 Table 7.4 CO2 solubility and diffusivity coefficients at 35°C and bar… 129 Table 8.1 Spinning conditions for...

Ngày tải lên: 09/09/2015, 11:22

... Mr Zhang Yanyuan and Madam Lin Aiping, my grandmother Madam Qu Juying, my late grandfather Mr Lin Yunhu and all my relatives for their continuous and infinite love, support and encouragement ... applications for purification and separation since the twentieth century and has been demonstrated good potential in water and wastewater treatment for its advantages of being cost-effective and user-friendly ... indicator and solid matrix (Lobnik 2006) Extensive efforts have been made to discover and develop highly sensitive and selective optical indicators (Feng and Chen 2007; Li et al 2006; Mohr 2006; Ng and...

Ngày tải lên: 09/09/2015, 17:52

... with low-fouling property and appropriate pore size for complete retention of the enantiomer-ligand complex and thus, ensuring high recovery of the steroselective ligand for subsequent separations ... factor, overall L-tryptophan yield and percentage of recovered HSA for fiber-15cm Table 3.4 Summary of far-UV CD and near-UV CD data for native, acid-denatured and base-renatured HSA with different ... membranes Figure 3.5 Far-UV CD spectra (A) and near-UV CD spectra (B) for native, one time acid-denatured and one time base-renatured HSA Figure 3.6 Comparison of yields of L-tryptophan (A) and...

Ngày tải lên: 30/09/2015, 13:49

... [7] Song C, Introduction to hydrogen and syngas production and purification technologies In: Liu K, Song C, Subramani V, editors Hydrogen and syngas production and purification technologies, Wiley, ... these membranes affirm that they have great prospective as potential materials for hydrogen purification and flue gas treatment XI In a nutshell, rubbery polymeric membranes with outstanding ... POLYMERIC MEMBRANES BASED ON CO2-PHILIC MATERIALS FOR HYDROGEN PURIFICATION AND FLUE GAS TREATMENT CHEN HANG ZHENG (B Eng., National University of Singapore, Singapore) A THESIS SUBMITED FOR THE...

Ngày tải lên: 09/09/2015, 17:55

... respectively, were: -0.54 and -0.25 for rice, -0.54 and -0.35 for wheat flour, -0.09 and -0.03 for coarse grains, -0.96 and -0.33 for pork, -0.03 and -0.40 for eggs, and -0.39 and -0.47 for edible oils ... -2.0 for rice, -1.2 for wheat flour, -1.3 for pork and -1.6 for edible oils The own-price elasticities for the amount of foods consumed were: -0.12 for rice, -0.16 for wheat flour, -0.38 for pork ... elasticities with respect to pork for consuming foods were: 0.21 for wheat flour, 0.36 for coarse grains and 0.33 for edible oils; however, they were: -0.93 for rice and -0.32 for eggs What is known about...

Ngày tải lên: 17/03/2014, 08:20

... for biomass-toliquids and biomass-to -hydrogen plants, to size and cost these plants, and to calculate the required selling price of liquid fuels and hydrogen produced from biomass Economics and ... characteristics for the various options shown in Figure In general, syngas characteristics and conditioning are more critical for fuels and chemical synthesis applications than for hydrogen and fuel ... ii Sufficient information currently exists to conduct conceptual design studies on these systems For all of these reasons, it therefore appears that for fuels, chemicals and hydrogen applications,...

Ngày tải lên: 18/03/2014, 02:20

... Membranes for Industrial Wastewater Recovery and Re-use To Claire, Oliver and Samuel Membranes for Industrial Wastewater Recovery and Re-use Edited by: Simon Judd and Bruce Jefferson ... other than water, 16 Membranes for Industrial Wastewater Recovery and Re-use Table 2.1 Dense and porous membranes for water treatment (adapted from Stephenson et aJ., 2000) Dense Porous Membrane ... Simon Membranes for industrial wastewater recovery and re-use / Simon Judd and Bruce Jefferson p cm Includes bibliographical references and index ISBN 1-85617-389-5 Sewage -Purification Factory and...

Ngày tải lên: 22/03/2014, 12:20

Ngày tải lên: 31/03/2014, 12:20

... literature and in the manufacturer's manual for the pMAL expression system (pMAL Protein Fusion and Purification System Manual, New England BioLabs); and (2) translocation of LASV GP1 and NP to ... cycling conditions: 98°C for one 15 second (sec) cycle and then 35 repeated cycles of 98°C for sec, 59°C for 10 sec, and 72°C for 15 sec, followed by a final extension at 72°C for minutes (min) LASV ... cycling conditions: 98°C for one 30 sec cycle and then 35 repeated cycles of 98°C for 10 sec, 59°C for 15 sec, and 72°C for 30 sec, followed by a final extension at 72°C for Table outlines each...

Ngày tải lên: 20/06/2014, 01:20

... Membranes for Industrial Wastewater Recovery and Re-use To Claire, Oliver and Samuel Membranes for Industrial Wastewater Recovery and Re-use Edited by: Simon Judd and Bruce Jefferson ... other than water, 16 Membranes for Industrial Wastewater Recovery and Re-use Table 2.1 Dense and porous membranes for water treatment (adapted from Stephenson et aJ., 2000) Dense Porous Membrane ... Simon Membranes for industrial wastewater recovery and re-use / Simon Judd and Bruce Jefferson p cm Includes bibliographical references and index ISBN 1-85617-389-5 Sewage -Purification Factory and...

Ngày tải lên: 27/06/2014, 17:20

... Membranes for Industrial Wastewater Recovery and Re-use To Claire, Oliver and Samuel Membranes for Industrial Wastewater Recovery and Re-use Edited by: Simon Judd and Bruce Jefferson ... other than water, 16 Membranes for Industrial Wastewater Recovery and Re-use Table 2.1 Dense and porous membranes for water treatment (adapted from Stephenson et aJ., 2000) Dense Porous Membrane ... Simon Membranes for industrial wastewater recovery and re-use / Simon Judd and Bruce Jefferson p cm Includes bibliographical references and index ISBN 1-85617-389-5 Sewage -Purification Factory and...

Ngày tải lên: 27/06/2014, 17:20

... Membranes for Industrial Wastewater Recovery and Re-use To Claire, Oliver and Samuel Membranes for Industrial Wastewater Recovery and Re-use Edited by: Simon Judd and Bruce Jefferson ... other than water, 16 Membranes for Industrial Wastewater Recovery and Re-use Table 2.1 Dense and porous membranes for water treatment (adapted from Stephenson et aJ., 2000) Dense Porous Membrane ... Simon Membranes for industrial wastewater recovery and re-use / Simon Judd and Bruce Jefferson p cm Includes bibliographical references and index ISBN 1-85617-389-5 Sewage -Purification Factory and...

Ngày tải lên: 27/06/2014, 17:20

... Membranes for Industrial Wastewater Recovery and Re-use To Claire, Oliver and Samuel Membranes for Industrial Wastewater Recovery and Re-use Edited by: Simon Judd and Bruce Jefferson ... other than water, 16 Membranes for Industrial Wastewater Recovery and Re-use Table 2.1 Dense and porous membranes for water treatment (adapted from Stephenson et aJ., 2000) Dense Porous Membrane ... Simon Membranes for industrial wastewater recovery and re-use / Simon Judd and Bruce Jefferson p cm Includes bibliographical references and index ISBN 1-85617-389-5 Sewage -Purification Factory and...

Ngày tải lên: 28/06/2014, 00:20

... ePTFE membranes may be an advantage for membrane retrieval, it may also create potential problems for initial clot formation, wound stabilization and membrane stability Although TD, RD and BG ... serum starvation and suspended into standard culture medium with 10% FBS HGF and PDLF were seeded into a 96-well plate with a density of 2,5 × 103/well and further incubated under standard cultivation ... statistical analyses were performed using statistical software SPSS® (Version 12.0, for Windows, Chicago, IL, USA) Statistical analysis was performed for each cell group (HGF, PDLF and HOB) separately...

Ngày tải lên: 11/08/2014, 20:20

... pressure hydrogen While the large energy consumption for cooling process, and high cost for tank manufacturing and unavoidable energy loss due to boiling off hydrogen, liquid form of hydrogen ... crisis and environmental problems in the 21st century Section 1.2 and 1.3 introduce the basic concepts and knowledge to understand hydrogen storage materials and solid lithium ionic conductor, and ... reactive, hydrogen forms numerous chemical compounds, such as water, minerals, and hydrocarbons Hydrogen can be produced from renewable sources such as electrolysis of water and reforming ethanol Hydrogen...

Ngày tải lên: 10/09/2015, 08:29

... procedures for TFC membranes 177  Figure 8.3 SEM images of (a) PAN membrane support before and after being pressurized at 15bar for 120 min, and (b) PAN TFC membrane before and after ... FO and PRO technologies The objectives of this dissertation were to develop novel materials and fabrication methods for preparing effective FO membranes for clean water production and PRO membranes ... curves of the hand-cast Matrimid® support before and after being pressurized at 15bar for 120 min.181  Figure 8.7 SEM images of the fabricated TFC membranes (i.e., TFC200) before and after being...

Ngày tải lên: 10/09/2015, 09:02

... respectively, and thus, are attractive for hydrogen storage However, direct uses of these chemicals for hydrogen storage are not feasible due to their poor dehydrogenation kinetic and thermodynamic ... also true for AB, AB2 and AB3-type alloys.9 Therefore, research efforts have shifted towards the use of lighter and cheaper metal hydrides, for instances, simple binary hydrides.12, 13 LiH and MgH2 ... required for the dehydrogenation Therefore, research efforts have been focused on the kinetic improvement of LiAlH4 by nanosizing and catalytic modifications 1.2.2.1 Activation for hydrogen release...

Ngày tải lên: 10/09/2015, 15:50