Chiral molecules adsorbed on a solid surface: Tartaric acid diastereomers and their surface explosion on Cu(111)

Chirality ◽  
2018 ◽  
Vol 30 (4) ◽  
pp. 369-377 ◽  
Author(s):  
Alexandra Rieger ◽  
Cédric Sax ◽  
Tobias Bauert ◽  
Christian Wäckerlin ◽  
Karl-Heinz Ernst
Keyword(s):  
Tartaric Acid ◽  
Solid Surface ◽  
Chiral Molecules ◽  
Surface Explosion

Chiral nanoscale pores created during the surface explosion of tartaric acid on Cu(111)

2016 ◽  
Vol 52 (99) ◽  
pp. 14282-14285 ◽  
Author(s):  
A. J. Therrien ◽  
T. J. Lawton ◽  
B. Mernoff ◽  
F. R. Lucci ◽  
V. V. Pushkarev ◽  
...  
Keyword(s):  
Surface Structure ◽  
Tartaric Acid ◽  
Autocatalytic Decomposition ◽  
High Coverage ◽  
Surface Explosion

The autocatalytic decomposition of tartaric acid on Cu(111) exhibits unique kinetics, which are linked to a hexagonal surface structure adopted at high coverage.

Surface Structure of Heterogeneous Catalysts: Cinchona and Tartaric Acid on Solid Surface

2005 ◽  
Vol 35 (1-2) ◽  
pp. 131-139 ◽  
Author(s):  
Dong Wang ◽  
Hui-Juan Yan ◽  
Qing-Min Xu ◽  
Mei-Juan Han ◽  
Li-Jun Wan
Keyword(s):  
Surface Structure ◽  
Tartaric Acid ◽  
Solid Surface ◽  
Heterogeneous Catalysts

scholarly journals Chemisorptive enantioselectivity of chiral epoxides on tartaric-acid modified Pd(111): three-point bonding

2015 ◽  
Vol 17 (7) ◽  
pp. 5450-5458 ◽  
Author(s):  
Mausumi Mahapatra ◽  
Wilfred T. Tysoe
Keyword(s):  
Tartaric Acid ◽  
Propylene Oxide ◽  
Temperature Programmed Desorption ◽  
Chiral Molecules ◽  
Chiral Epoxides ◽  
Temperature Programmed

The chemisorption of two chiral molecules, propylene oxide and glycidol, is studied on tartaric-acid modified Pd(111) surfaces by using temperature-programmed desorption to measure adsorbate coverage.

Surface Structure of Heterogeneous Catalysts: Cinchona and Tartaric Acid on Solid Surface

ChemInform ◽  
2006 ◽  
Vol 37 (15) ◽  
Author(s):  
Dong Wang ◽  
Hui-Juan Yan ◽  
Qing-Min Xu ◽  
Mei-Juan Han ◽  
Li-Jun Wan
Keyword(s):  
Surface Structure ◽  
Tartaric Acid ◽  
Solid Surface ◽  
Heterogeneous Catalysts

Chiral Recognizable Properties of Thermosensitive Poly(NIPA-co-NALPE) Hydrogels

2010 ◽  
Vol 160-162 ◽  
pp. 13-18
Author(s):  
Jiao Jiao Chen ◽  
Lin Jiang ◽  
Yi Ping Zhao ◽  
Qing Song Zhang ◽  
Li Chen
Keyword(s):  
Acrylic Acid ◽  
Tartaric Acid ◽  
Ethyl Ester ◽  
Chiral Separation ◽  
Temperature Sensitive ◽  
Chiral Molecules ◽  
Chiral Drugs ◽  
Isothermal Adsorption ◽  
Potential Applications

A serious of poly(NIPA-co-NALPE) hydrogels containing chiral group (L-Phenylalanine ethyl ester) were prepared by copolymerization of N-isopropylacrylamide(NIPA) and acrylic acid derivatived L-Phenylalanine ethyl ester (NALPE) in ethanol with different feed ratios. The kinetics adsorption approach, isothermal adsorption and chiral separation experiment of hydrogels on D/L-phenylalanine were investigated, and the results showed that the chiral hydrogels exhibited enantioselectivity for D/L-phenylalanine and the absorption capability increased with the rising temperature and increasing contents of NALPE due to the temperature-sensitive NIPA molecular chains and the chiral monomer NALPE, respectively. Furthermore, the poly(NIPA-co-NALPE) hydrogels were also used to separate DL-alanine and DL-tartaric acid, which suggested that the gels are also applicable to other chiral molecules besides DL-phenylalanine and have potential applications in separation of chiral drugs.

Microwave resonance method for measuring microliter volumes of free moisture in aviation fuels

2020 ◽  
pp. 49-56
Author(s):  
Vitaly V. Volkov ◽  
Michael A. Suslin ◽  
Jamil U. Dumbolov
Keyword(s):  
Solid Surface ◽  
Free Water ◽  
Resonance Method ◽  
Cavity Resonator ◽  
Maximum Error ◽  
Aviation Fuel ◽  
Fuel Quality ◽  
Microwave Resonance ◽  
Free Moisture ◽  
Microwave Losses

One of the conditions for ensuring the safety of air transport operation is the quality of aviation fuel refueled in aircraft. Fuel quality control is a multi-parameter task that includes monitoring the free moisture content. Regulatory documents establish the content of free water no more than 0.0015% by weight. It is developed a direct electrometric microwave resonance method for controlling free moisture in aviation fuels, which consists in changing the shape of the water drops by pressing them on a solid surface inside a cylindrical cavity resonator. This can dramatically increase dielectric losses. Analytical and experimental analysis of the proposed method is carried out. The control range from 0,5 to 30 μl of absolute volume of moisture in aviation fuels with a maximum error of not morethan 25 % is justified. The sensitivity of the proposed method for monitoring microwave losses in free moisture drops transformed into a thin layer by pressing is an order of magnitude greater than the sensitivity of the method for monitoring microwave losses in moisture drops on a solid surface in a resonator. The proposed method can be used as a basis for the development of devices for monitoring the free moisture of aviation fuels in the conditions of the airfield and laboratory. The direction of development of the method is shown.

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