نتایج جستجو برای: sacrificial agent

تعداد نتایج: 255320  

Journal: :iranian journal of oil & gas science and technology 2014
mohammad amin safarzadeh seyyed alireza tabatabaei nezhad eghbal sahraei mehdi mohammad salehi

the main factor affecting the economics of foam-assisted water alternative gas (fawag) process isthe loss of foaming agent by adsorption onto reservoir rocks. in this study, the effects of phases,surfactant concentration, salinity, adsorbents, and sacrificial agent on adsorption density wereinvestigated by special adsorption experiments. moreover, a series of fawag tests were performedto examin...

2017
Laura Dura Maria Wächtler Stephan Kupfer Joachim Kübel Johannes Ahrens Sebastian Höfler Martin Bröring Benjamin Dietzek Torsten Beweries

A series of boron dipyrromethene (BODIPY) dyes was tested as photosensitisers for light-driven hydrogen evolution in combination with the complex [Pd(PPh3)Cl2]2 as a source for catalytically-active Pd nanoparticles and triethylamine as a sacrificial electron donor. In line with earlier reports, halogenated dyes showed significantly higher hydrogen production activity. All BODIPYs were fully cha...

2016
Rajashekar Badam Raman Vedarajan Kazuki Okaya Koichi Matsutani Noriyoshi Matsumi

Electrocatalytic materials for oxygen reduction reaction, currently dominated by platinum/carbon catalyst is marred by drawbacks such as use of copious amount of Pt and use of "non-green" sacrificial reducing agent (SRA) during its synthesis. A single stroke remedy for these two problems has been achieved through an in-situ aqueous photoreduction void of even trace amounts of SRA with an enhanc...

Eghbal Sahraei, Mehdi Mohammad Salehi, Mohammad Amin Safarzadeh, Seyyed Alireza Tabatabaei Nezhad

The main factor affecting the economics of foam-assisted water alternative gas (FAWAG) process is the loss of foaming agent by adsorption onto reservoir rocks. In this study, the effects of phases, surfactant concentration, salinity, adsorbents, and sacrificial agent on adsorption density were investigated by special adsorption experiments. Moreover, a series of FAWAG tests were performed to ex...

Journal: :international journal of nanoscience and nanotechnology 2011
a. ayati a. ahmadpour f. f. bamoharram m. m . heravi h. rashidi

in this paper, we have described the size-controlled synthesis of gold nanoparticles based on the reduction of au3+ (haucl4 ) using molybdophosphoric acid (h3[pmo12o40 ], hpmo) under uv-irradiation. in the process, hpmo plays the role of photocatalyst, reducing agent and stabilizer and propan-2-ol acts as a sacrificial agent. this method allows the synthesis of uniform hexagonal nanoparticles w...

A. Ahmadpour A. Ayati B. Tanhaei F. F. Bamoharram H. Rashidi M. M . Heravi

In this paper, we have described the size-controlled synthesis of gold nanoparticles based on the reduction of Au3+ (HAuCl4 ) using molybdophosphoric acid (H3[PMo12O40 ], HPMo) under UV-irradiation. In the process, HPMo plays the role of photocatalyst, reducing agent and stabilizer and propan-2-ol acts as a sacrificial agent. This method allows the synthesis of uniform hexagonal nanoparticles w...

Journal: :Catalysis Science & Technology 2023

Correction for ‘CeO 2 nanoarray decorated Ce-doped ZnO nanowire photoanode efficient hydrogen production with glycerol as a sacrificial agent’ by Seungkyu Kim et al. , Catal. Sci. Technol. 2022, 12 5517–5523, https://doi.org/10.1039/D2CY00558A.

Journal: :Chemical communications 2011
Zhenyu Zhang Qipu Lin Shou-Tian Zheng Xianhui Bu Pingyun Feng

A tin(II) tungstosilicate derivative K(11)H[Sn(4)(SiW(9)O(34))(2)]·25H(2)O with four sandwiched Sn(2+) cations was prepared by reaction of SnCl(2), KCl and Na(10)[α-SiW(9)O(34)]·xH(2)O. Visible-light photocatalytic H(2) evolution activity was observed with Pt nanoparticles as co-catalyst and methanol as sacrificial agent.

Journal: :Chemical communications 2007
Hongying Lü Jinbo Gao Zongxuan Jiang Yongxing Yang Bo Song Can Li

Dibenzothiophene (DBT) is oxidized to the corresponding sulfoxide and sulfone in an emulsion system (W/O) composed of polyoxometalate anion [C(18)H(37)N(CH(3))3](5)[PV(2)Mo(10)O(40)] as both the surfactant and catalyst, using molecular oxygen as the oxidant and aldehyde as the sacrificial agent under mild conditions.

Eghbal Sahraei Mohammad Amin Safarzadeh Seyyed Alireza Tabatabaei Nejad,

Fractional flow analysis confirms the advantages of surfactant alternative gas injection (SAG) in enhanced oil recovery, but an adsorption phenomenon that has been affected by several factors, weakens the effectiveness of SAG injection. In this study, the effects of sacrificial agent, gas phase, and surfactant concentration on adsorption density on silica mineral were investigated by static and...

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