Base-free hydrogen generation from formaldehyde and water catalyzed by copper nanoparticles embedded on carbon sheets

2019 ◽  
Vol 9 (3) ◽  
pp. 783-788 ◽  
Author(s):  
Xiao Chen ◽  
Huan Zhang ◽  
Zhaoming Xia ◽  
Sai Zhang ◽  
Yuanyuan Ma
Keyword(s):  
Copper Nanoparticles ◽  
Hydrogen Generation ◽  
Cu Nanoparticles ◽  
Free Hydrogen

Base-free hydrogen generation through complete dehydrogenation from formaldehyde and water catalyzed by Cu nanoparticles embedded on carbon sheets.

High-Purity, CO2-Free Hydrogen Generation from Crude Oils in Crushed Rocks Using Microwave Heating

2021 ◽  
Author(s):  
Qingwang Yuan ◽  
Xiangyu Jie ◽  
Bo Ren
Keyword(s):  
Microwave Heating ◽  
Environmental Impacts ◽  
High Purity ◽  
Oil And Gas ◽  
Hydrogen Generation ◽  
Petroleum Industry ◽  
Petroleum Reservoirs ◽  
Crude Oils ◽  
Hydrogen Yield ◽  
Free Hydrogen

Abstract While the demand for hydrocarbon resources has been continuously increasing in the past 150 years, the industry is, however, criticized for carbon dioxide (CO2) emissions and concomitant global warming concerns. The oil and gas industry also face growing pressures in the ongoing energy transition. Generating and producing hydrogen (H2) directly from petroleum reservoirs has the potential to mitigate environmental impacts while revolutionizing the traditional petroleum industry and enabling it to become a clean hydrogen industry. This paper proposes a novel approach to generate high-purity, CO2-free hydrogen from the abundant oil and gas resources in petroleum reservoirs using microwave heating. In this work, laboratory experiments were conducted to validate this scientific proof-of-concept and examine the roles of crushed rocks, catalysts, and water/oil ratio in hydrogen generation from crude oils in a reactor. A maximum of 63% ultimate hydrogen content is obtained in the generated gas mixtures, while the original CO2content in all experiments is negligible (<1%). Catalysts can promote hydrogen generation by accelerating rate and locally enhancing microwave (MW) absorption to create ‘super-hot spots'. Water also participates in reactions, and additional hydrogen is generated through water-gas shift reactions. The water-oil ratio in porous rocks affects the ultimate hydrogen yield. Overall, this research demonstrates the great potential of using MW heating to generate high-purity, CO2-free hydrogen from in situ petroleum reservoirs. Further research and wide application of this technology would potentially transform petroleum reservoirs to hydrogen generators, thus mitigating the environmental impacts of traditional petroleum industry while meeting the increasing demand for clean hydrogen energy. This technology would also benefit the safe transition towards a decarbonized society.

Target regulated photo induced electron transfer of DNA-Cu nanoparticles and their application for the detection of the hepatitis B gene

2018 ◽  
Vol 10 (22) ◽  
pp. 2614-2622 ◽  
Author(s):  
Qiang Xie ◽  
Dongmin Shi ◽  
Jing Wan ◽  
Xiaojun Zhang ◽  
Guangfeng Wang
Keyword(s):  
Electron Transfer ◽  
Hepatitis B ◽  
Copper Nanoparticles ◽  
Fluorescent Probes ◽  
Cu Nanoparticles ◽  
Photo Induced Electron Transfer ◽  
Fluorescence Quencher ◽  
Dna Template ◽  
Distinct Features

Despite the distinct features of polythymine (T)-templated copper nanoparticles (polyT-Cu NPs) as fluorescent probes for various biosensors, most of the reported methods involve labeling with an appropriate fluorescence quencher, or the addition of enzyme to digest the DNA-template.

scholarly journals An N-heterocyclic carbene ligand promotes highly selective alkyne semihydrogenation with copper nanoparticles supported on passivated silica

2018 ◽  
Vol 9 (24) ◽  
pp. 5366-5371 ◽  
Author(s):  
Nicolas Kaeffer ◽  
Hsueh-Ju Liu ◽  
Hung-Kun Lo ◽  
Alexey Fedorov ◽  
Christophe Copéret
Keyword(s):  
Copper Nanoparticles ◽  
High Selectivity ◽  
Cu Nanoparticles

Binding of an N-heterocyclic carbene to Cu nanoparticles on passivated silica enables high selectivity in alkyne semihydrogenation.

scholarly journals CO2 electroreduction to fuels on mesoporous carbon-embedded copper nanoparticles

2020 ◽  
Vol 4 (12) ◽  
pp. 6045-6053
Author(s):  
Nihat Sahin ◽  
Wanderson O. Silva ◽  
Mariana R. Camilo ◽  
Edson A. Ticianelli ◽  
Fabio H. B. Lima ◽  
...  
Keyword(s):  
Copper Nanoparticles ◽  
Mesoporous Carbon ◽  
Soft Template ◽  
Cu Nanoparticles ◽  
Green Process ◽  
Charge Mass ◽  
Co2 Electroreduction ◽  
Mass Transfers

An electrocatalyst with Cu nanoparticles embedded in a mesoporous carbon was prepared by the soft-template route using a green process. Its particular structure boosts its performance for CO2RR regarding selectivity and charge/mass transfers.

Fast in-situ photodeposition of Ag and Cu nanoparticles onto AgTaO3 perovskite for an enhanced photocatalytic hydrogen generation

2020 ◽  
Vol 45 (16) ◽  
pp. 9744-9757 ◽  
Author(s):  
Omar A. Carrasco-Jaim ◽  
Ali M. Huerta-Flores ◽  
Leticia M. Torres-Martínez ◽  
Edgar Moctezuma
Keyword(s):  
Hydrogen Generation ◽  
Cu Nanoparticles ◽  
Photocatalytic Hydrogen Generation

Enzymatic polymerization of poly(thymine) for the synthesis of copper nanoparticles with tunable size and their application in enzyme sensing

2015 ◽  
Vol 51 (41) ◽  
pp. 8644-8647 ◽  
Author(s):  
Tai Ye ◽  
Chunying Li ◽  
Chen Su ◽  
Xinghu Ji ◽  
Jiao Zheng ◽  
...  
Keyword(s):  
Copper Nanoparticles ◽  
Enzymatic Polymerization ◽  
Cu Nanoparticles ◽  
Bottom Up ◽  
Sensing Performance

A bottom-up strategy was developed for enzyme mediated synthesis of Cu nanoparticles, which showed good sensing performance.

Graphene oxide doped poly(3,4-ethylenedioxythiophene) modified with copper nanoparticles for high performance nonenzymatic sensing of glucose

2015 ◽  
Vol 3 (4) ◽  
pp. 556-561 ◽  
Author(s):  
Ni Hui ◽  
Wenting Wang ◽  
Guiyun Xu ◽  
Xiliang Luo
Keyword(s):  
Graphene Oxide ◽  
Conducting Polymer ◽  
Electrochemical Deposition ◽  
Copper Nanoparticles ◽  
High Performance ◽  
Glucose Sensor ◽  
Cu Nanoparticles ◽  
Nonenzymatic Glucose Sensor ◽  
Nonenzymatic Sensing ◽  
Highly Sensitive

A highly sensitive and stable nonenzymatic glucose sensor was developed through the electrochemical deposition of Cu nanoparticles onto an electrodeposited nanocomposite of conducting polymer PEDOT doped with graphene oxide.

Oxygen flux and process analysis of hydrogen separation from water through mixed conducting membrane

2005 ◽  
Vol 885 ◽  
Author(s):  
Annamalai Karthikeyan ◽  
Hengdong Cui ◽  
Srikanth Gopalan ◽  
Uday B. Pal
Keyword(s):  
Hydrogen Generation ◽  
Process Analysis ◽  
Experimental Conditions ◽  
Surface Exchange ◽  
Oxygen Ions ◽  
Hydrogen Flux ◽  
Oxidation Of Methane ◽  
Free Hydrogen ◽  
Surface Exchange Coefficient ◽  
Hydrogen Synthesis

ABSTRACTHydrogen synthesis and segregation from water splitting with simultaneous partial oxidation of methane can be achieved using MIEC membranes that conduct oxygen ions and electrons. The process offers hydrocarbon free hydrogen production on the feed side of the membrane (steam side) and syn-gas on the permeate side (methane side). A composite MIECs system comprising GdxCe1−xO2−x/2 (GDC) and GdxSr1−xTi1−yAlyO3 (GSTA) has been used and the hydrogen flux has been estimated. The oxygen diffusion coeffcient for oxygen transport through the bulk of the membrane and surface exchange coefficient of oxygen at the solid/gas interface were obtained using electrical conductivity relaxation (ECR) experiments and the hydrogen generation flux was measured for membranes of different thicknesses, with and without surface exchange catalysts for various experimental conditions.

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