Therefore, simulation of hyperspectral imagery from multispectral imagery with a small number of bands must be one of innovative topics. However, hyperspectral remote sensing resources are limited both in temporal and spatial coverage. Hyperspectral remote sensing is more effective than multispectral remote sensing in many application fields because of having hundreds of observation bands with high spectral resolution.
Potassium-modified ZrO 2 is heterogeneous base catalyst w hile Zirconium dioxide is a promising heterogeneous catalyst due to its thermal stability and reduction-oxidation properties. Started from this point of advantageous in using heterogeneous catalyst, many researches pay more attention to look for other solid catalyst instead of hydrotalcite. Recently, heterogeneous catalyst has been attempted to replace the homogeneous catalyst refer to the more selective, stability and reusable characters. Cross aldol condensation can be conducted under both acid and base condition and homogeneous form of catalyst. Refer to these w orks, in this paper, an efficient and novel method for producing high yield and purity of 1,5- dibenzalacetone is presented. In simpler way, previous experiment was conducted by using acetone and two different aldehydes and derivatives but with low yield. Eventhough the reaction is an efficient reaction but it is time consumed due to two steps of reaction required.
By the scheme, previous research investigated ultrasound-induced crossed aldol condensation of benzalacetone and several derivatives to obtain 1,5-dibenzalaseton. Acetone which has Hα in both sides can be reacted in condensation w ith the same or different aldehyde.
Synthesis of analogeous dibenzalacetone by reacting acetone and benzaldehyde and its derivatives is a well-known reaction. Aldol condensation reaction is usually performed to synthesize unsaturated α -carbonyl compounds w ith various advantageous such as chalcone, benzalacetone, etc.
0 kommentar(er)
