Hydrogen storage of dense-aligned carbon nanotubes

Cao, Anyuan; Zhu, Hua; Zhang, Xianfeng; Li, Xuesong; Ruan, Dianbo; Xu, Chao; Wei, BinQing; Ji, Liang; Wu, Dehai

doi:10.1016/s0009-2614(01)00619-4

Cited by 112 publications

(57 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…One of the CVD methods that has been developed is the synthesis of vertically aligned nanofibers bundles for specific applications. The synthesis of VACNFs arrays were all carried out in horizontal reactors (Cao et al, 2001). All the reported products by vertical floating catalyst method were randomly arranged CNFs (Perez-Cabero et al, 2003).…”

Section: Catalytic Chemical Vapour Deposition (Ccvd) Methodsmentioning

confidence: 99%

Electrochemical and Adsorption Properties of Catalytically Formed Carbon Nanofibers

Olenic¹,

Pruneanu²,

Almăşan³

et al. 2010

Nanofibers

View full text Add to dashboard Cite

Section: Catalytic Chemical Vapour Deposition (Ccvd) Methodsmentioning

confidence: 99%

Electrochemical and Adsorption Properties of Catalytically Formed Carbon Nanofibers

Olenic¹,

Pruneanu²,

Almăşan³

et al. 2010

Nanofibers

View full text Add to dashboard Cite

“…These include the following: Reprinted from Hirsch [84] with permission from Wiley-VCH Verlag GmbH. gy conversion devices, field-emission devices, hydrogen storage devices, and semiconductor devices [93,94]. Wastewater treatment by CNTs is also a rapidly growing field for those who are interested in adsorption studies [95].…”

Section: Dispersion Of Cntsmentioning

confidence: 99%

Carbon nanotubes-properties and applications: a review

Ibrahim¹

2013

Carbon letters

391

122

View full text Add to dashboard Cite

The carbon nanotube (CNT) represents one of the most unique inventions in the field of nanotechnology. CNTs have been studied closely over the last two decades by many researchers around the world due to their great potential in different fields. CNTs are rolled graphene with SP 2 hybridization. The important aspects of CNTs are their light weight, small size with a high aspect ratio, good tensile strength, and good conducting characteristics, which make them useful as fillers in different materials such as polymers, metallic surfaces and ceramics. CNTs also have potential applications in the field of nanotechnology, nanomedicine, transistors, actuators, sensors, membranes, and capacitors. There are various techniques which can be used for the synthesis of CNTs. These include the arc-discharge method, chemical vaporize deposition (CVD), the laser ablation method, and the sol gel method. CNTs can be single-walled, double-walled and multi-walled. CNTs have unique mechanical, electrical and optical properties, all of which have been extensively studied. The present review is focused on the synthesis, functionalization, properties and applications of CNTs. The toxic effect of CNTs is also presented in a summarized form.

show abstract

“…A key feature of nano-scale materials is that they usually show very distinct physical, chemical, biological and mechanical properties compared to their macroscopic size counterparts. Nano-materials have being employed in various applications, such as panel displays [12,13], chemical sensors [14], hydrogen storage [15,16], electronics devices [17][18][19], medical applications [20,21], nano-scale materials [22,23], and reinforcing composites [24]. One of these interesting nano-materials is carbon nanotubes (CNTs), which have been widely studied due to their remarkable physical and chemical properties.…”

Section: Introductionmentioning

confidence: 99%

Carbon Nanotubes: A New Methodology for Enhanced Squeeze Lifetime CNTs

Ghorbani¹,

Wilson²,

Kapur³

et al. 2014

SPE International Oilfield Scale Conference and Exhibition

View full text Add to dashboard Cite

A new potential application of nanotechnology for mineral scale prevention in the oil and gas industry is presented. In current squeeze treatments, in which scale inhibitors are squeezed into wells to adsorb or precipitate onto rock surfaces for later release, a large proportion of the injected inhibitor does not adsorb and is therefore returned very quickly from the reservoir upon well re-start. Here it is demonstrated that nano-particles have the potential to enhance squeeze lifetime by greatly increasing the adsorption of inhibitors within the formation. An extensive literature review is presented, exploring the potential for using nano-scale materials in squeeze treatments. One of the observations from scale inhibitor squeezes into sandstone reservoirs is the apparent lack of suitable surfaces available for adsorption. The main constituent of sandstones, quartz, has a very low ability to adsorb inhibitor (1 mg/I). Given this, research using nanotechnology was targeted towards enhancing the available sites for scale inhibitor adsorption within the near wellbore. Specifically, research was undertaken to examine the potential benefits of using carbon nanotubes in a process called Nanotechnology Assisted Squeeze Treatment (NAST). The process involves carbon nanotubes adsorbing and permanently modifying the near wellbore with scale inhibitors subsequently adsorbing onto the nanotubes. This process was observed to be significantly higher than a non-modified near wellbore surface, with a maximum adsorption of more than 85 and 160mg/g onto the nanotubes in solution of distilled water (DW) and CaC12 in DW; respectively, compared to 1 mg/g directly onto the rock. Coreflood tests comparing the NAST procedure with a simplified standard coreflood show the potential for improvement of the squeeze lifetime. IntroductionInorganic scale precipitation, including formation of CaCO 3 , MgCO 3 , FeCO 3 , BaSO 4 , CaSO 4 , SrSO 4 , etc. occurs when two incompatible brines are mixed or where the conditions (i.e. temperature and pressure) in a system are changed and there is a resulting change in the solubility of certain salts. This can cause blockage of the oil path and damage to the production system. A chemical squeeze treatment is used to pump scale inhibitor (SI) downhole to adsorb or precipitate onto the formation rock. The aim is to establish a downhole reserve of SI from which subsequent desorption or release maintains a concentration of SI within the reservoir sufficient to prevent scale formation. The lifetime of the squeeze treatment is defined as the time when the return Scale Inhibitor (SI) concentration falls below the Minimum Inhibitor Concentration (MIC), which is typically 1-20 ppm depending on the reservoir conditions and SI properties. At this point the well needs to be re-squeezed. Regardless of whether the SI adsorbs or precipitates, the squeeze treatment process is expensive due to the squeeze implementation, chemical inhibitor costs and most importantly because of production losses/deferred during th...

show abstract

Hydrogen storage of dense-aligned carbon nanotubes

Cited by 112 publications

References 20 publications

Electrochemical and Adsorption Properties of Catalytically Formed Carbon Nanofibers

Electrochemical and Adsorption Properties of Catalytically Formed Carbon Nanofibers

Carbon nanotubes-properties and applications: a review

Carbon Nanotubes: A New Methodology for Enhanced Squeeze Lifetime CNTs

Contact Info

Product

Resources

About