Total Integration of the Sample Injection, Microdroplet Reaction, Phase Separation, Real‐Time Optical Detection, and Recovery of Diverse Silver–Gold Bimetallic Nanoalloys in a Continuous Process

2020 ◽  
pp. 2000244
Author(s):  
Hoang Khang Bui ◽  
Ki Yoon Kim ◽  
Hyeonjin Kim ◽  
Jae‐Pyoung Ahn ◽  
Taekyung Yu ◽  
...  
Keyword(s):  
Phase Separation ◽  
Real Time ◽  
Continuous Process ◽  
Optical Detection ◽  
Reaction Phase ◽  
Sample Injection ◽  
Total Integration

Metal-Alkali Catalytic Valorization of Lignocellulose Towards Aromatics and Small Molecular Alcohols and Acids in a Holistic Approach

2021 ◽  
Author(s):  
Wei Lv ◽  
Yuting Zhu ◽  
Weiqi Mai ◽  
Changhui Zhu ◽  
Qifeng Pi ◽  
...  
Keyword(s):  
Phase Separation ◽  
Room Temperature ◽  
Holistic Approach ◽  
Woody Biomass ◽  
Solvent System ◽  
Effective Strategy ◽  
One Pot ◽  
Reaction Phase ◽  
Alkali Catalysts ◽  
O Phase

Abstract In this work, we developed an approach of one-pot completely catalytic conversion of woody biomass into two value product streams: lignin-derived aromatics (68.54% monomer and 29.65% oligomer yields of lignin) and (semi-)cellulose-derived small molecular alcohols (about 59.60% of biomass mass). These could be afforded by conducting lignocellulose depolymerization over metal-alkaline catalysts in a mixture n-butanol/H2O solvent system at 250 °C and 30 bar H2. In the valorization process, the homogenous mixture of n-butanol-H2O solvents extract and depolymerize both lignin and hemicellulose, while the catalysts and H2 are essential to cleave the inter-/intramolecular linkages of lignocellulose into target products. After the reaction, phase separation of n-butanol and H2O takes place when systematic temperature at room temperature, providing a mild and effective strategy to isolate lignin-derived aromatics (n-butanol phase) from small molecular alcohols/acids (aqueous phase). Ru/C and alkali catalysts are collected by filtration from n-butanol phase and H2O phase, respectively. Meanwhile, the effect of metal-alkali coupled catalysts enables facilitating the cleavage of β-O-4 linkage of lignin and increasing the attainability of (semi-)cellulose-derived oligomers and the small molecular alcohols. This catalytic system provides a versatile valorization approach for biomass catalytic to bio-based chemicals.

scholarly journals A real-time impedance-sensing chip for the detection of emulsion phase separation

2013 ◽  
Vol 34 (12) ◽  
pp. NA-NA ◽  
Author(s):  
Yung-Sheng Lin ◽  
Wei-Lung Chou ◽  
Chih-Hui Yang ◽  
Keng-Shiang Huang ◽  
Eng-Chi Wang ◽  
...  
Keyword(s):  
Phase Separation ◽  
Real Time ◽  
Impedance Sensing ◽  
Emulsion Phase

scholarly journals Review of Dissolved Oxygen Detection Technology: From Laboratory Analysis to Online Intelligent Detection

Sensors ◽  
2019 ◽  
Vol 19 (18) ◽  
pp. 3995 ◽  
Author(s):  
Yaoguang Wei ◽  
Yisha Jiao ◽  
Dong An ◽  
Daoliang Li ◽  
Wenshu Li ◽  
...  
Keyword(s):  
Dissolved Oxygen ◽  
Real Time ◽  
Optical Detection ◽  
Oxygen Sensors ◽  
Detection Methods ◽  
Future Research ◽  
Advantages And Disadvantages ◽  
Oxygen Detection ◽  
Detection Technology ◽  
Intelligent Technology

Dissolved oxygen is an important index to evaluate water quality, and its concentration is of great significance in industrial production, environmental monitoring, aquaculture, food production, and other fields. As its change is a continuous dynamic process, the dissolved oxygen concentration needs to be accurately measured in real time. In this paper, the principles, main applications, advantages, and disadvantages of iodometric titration, electrochemical detection, and optical detection, which are commonly used dissolved oxygen detection methods, are systematically analyzed and summarized. The detection mechanisms and materials of electrochemical and optical detection methods are examined and reviewed. Because external environmental factors readily cause interferences in dissolved oxygen detection, the traditional detection methods cannot adequately meet the accuracy, real-time, stability, and other measurement requirements; thus, it is urgent to use intelligent methods to make up for these deficiencies. This paper studies the application of intelligent technology in intelligent signal transfer processing, digital signal processing, and the real-time dynamic adaptive compensation and correction of dissolved oxygen sensors. The combined application of optical detection technology, new fluorescence-sensitive materials, and intelligent technology is the focus of future research on dissolved oxygen sensors.

In situ photon transmission technique for monitoring phase separation in real time during gelation

2000 ◽  
Vol 45 (3) ◽  
pp. 281-285 ◽  
Author(s):  
Selim Kara ◽  
Oguz Okay ◽  
Önder Pekcan
Keyword(s):  
Phase Separation ◽  
Real Time ◽  
Transmission Technique ◽  
Monitoring Phase

scholarly journals Real-time optical detection of single human and bacterial viruses based on dark-field interferometry

2012 ◽  
Vol 31 (1) ◽  
pp. 499-504 ◽  
Author(s):  
Anirban Mitra ◽  
Filipp Ignatovich ◽  
Lukas Novotny
Keyword(s):  
Real Time ◽  
Optical Detection ◽  
Dark Field ◽  
Bacterial Viruses
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