Fluorometric analysis of borohydrides based on reductive aldehyde-to-alcohol conversion of arylaldehydes

2019 ◽  
Vol 60 (1) ◽  
pp. 59-62 ◽  
Author(s):  
Na Yeong Kim ◽  
Ji Hye Baek ◽  
Suk-Kyu Chang
Keyword(s):  
Fluorometric Analysis ◽  
Alcohol Conversion

scholarly journals Tuning the Reaction Selectivity over MgAl Spinel-Supported Pt Catalyst in Furfuryl Alcohol Conversion to Pentanediols

Catalysts ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 415
Author(s):  
Xinsheng Li ◽  
Jifeng Pang ◽  
Jingcai Zhang ◽  
Xianquan Li ◽  
Yu Jiang ◽  
...  
Keyword(s):  
Furfuryl Alcohol ◽  
Pt Nanoparticles ◽  
Catalytic Performance ◽  
Major Product ◽  
Pt Catalyst ◽  
Reaction Products ◽  
Strong Base ◽  
Reaction Selectivity ◽  
Supported Pt Catalysts ◽  
Alcohol Conversion

Catalytic conversion of biomass-derived feedstock to high-value chemicals is of remarkable significance for alleviating dependence on fossil energy resources. MgAl spinel-supported Pt catalysts were prepared and used in furfuryl alcohol conversion. The approaches to tune the reaction selectivity toward pentanediols (PeDs) were investigated and the catalytic performance was correlated to the catalysts’ physicochemical properties based on comprehensive characterizations. It was found that 1–8 wt% Pt was highly dispersed on the MgAl2O4 support as nanoparticles with small sizes of 1–3 nm. The reaction selectivity did not show dependence on the size of Pt nanoparticles. Introducing LiOH onto the support effectively steered the reaction products toward the PeDs at the expense of tetrahydrofurfuryl alcohol (THFA) selectivity. Meanwhile, the major product in PeDs was shifted from 1,5-PeD to 1,2-PeD. The reasons for the PeDs selectivity enhancement were attributed to the generation of a large number of medium-strong base sites on the Li-modified Pt catalyst. The reaction temperature is another effective factor to tune the reaction selectivity. At 230 °C, PeDs selectivity was enhanced to 77.4% with a 1,2-PeD to 1,5-PeD ratio of 3.7 over 4Pt/10Li/MgAl2O4. The Pt/Li/MgAl2O4 catalyst was robust to be reused five times without deactivation.

scholarly journals Studies on Fluorometric Analysis of Drugs. II

1956 ◽  
Vol 76 (9) ◽  
pp. 1087-1089
Author(s):  
Yoji Ichimura ◽  
Toshikazu Tabata
Keyword(s):  
Fluorometric Analysis

Batch Injection Analysis Using Fiber-Optic Fluorometric Detection

1992 ◽  
Vol 46 (1) ◽  
pp. 107-110 ◽  
Author(s):  
J. Wang ◽  
G. D. Rayson ◽  
Z. Taha
Keyword(s):  
Flow Injection ◽  
Large Volume ◽  
High Speed ◽  
Fiber Optic ◽  
Fluorometric Detection ◽  
Fluorometric Analysis ◽  
Blank Solution ◽  
Injection Rates

Fluorometric detection of analytes using batch injection analysis (BIA) has been investigated. BIA involves the injection of microliter samples toward a nearby detector which is immersed in a large-volume, nonflowing, blank solution. The characteristics and advantages of employing fiber-optic fluorometric detection for BIA are described. Similar to analogous flow injection measurements, batch injection fluorometric analysis offers high speed, reproducibility and simplicity, while eliminating the need for pumps, valves, and associated tubings. With injection rates at 120–500 samples/h, there is no observable carryover, and the precision is typically 2–3% (RSD).

Fluorometric analysis of riboflavin: An undergraduate biochemistry experiment

1990 ◽  
Vol 67 (9) ◽  
pp. 803 ◽  
Author(s):  
Ji-Yue Hy ◽  
Edward G. Senkbeil ◽  
Harold B. White
Keyword(s):  
Fluorometric Analysis

Limitations of quenching as a method of fluorometric analysis of non-fluorescent analytes

1998 ◽  
Vol 359 (3) ◽  
pp. 269-273 ◽  
Author(s):  
Yener Rakicioglu ◽  
Melissa Mickey Young ◽  
Stephen G Schulman
Keyword(s):  
Fluorometric Analysis

scholarly journals Delayed fluorometric analysis of chlorophyll c and pheophytin c.

1983 ◽  
Vol 32 (4) ◽  
pp. E115-E122 ◽  
Author(s):  
Yasuharu NISHIKAWA ◽  
Keizo HIRAKI ◽  
Yoshiaki ONOUE ◽  
Kazuyo NISHIKAWA ◽  
Yoshiaki YOSHITAKE ◽  
...  
Keyword(s):  
Fluorometric Analysis
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