The Canadian bee-keepers' guide an easy method of managing bees by use of the Thomas' patent moveable comb bee hive

Abstract

Feeding bees. Will it pay? 42

Gold in a Metallic Divided State—From Faraday to Present‐Day Nanoscience

“…But perhaps the most important, from the viewpoint of sustainable development, is the recent work of Christensen et al, [18] who showed how nanoparticle gold, supported on the inert spinel MgAl 2 O 4 , very efficiently leads to the formation of acetic acid by aqueous-phase oxidation of ethanol in air. This transformation is of profound significance in the context of sustainability since materials such as acetic acid and ethylene (which are currently converted industrially by addition [19] to yield the important solvent ethyl acetate) are each fossil-derived. Nanoparticle gold catalysts now offer a means of converting [18] biomass, via ethanol, into other commodity-scale products besides acetic acid, for example, ethylene butadiene and acetaldehyde.…”

Hydroesterification of ethylene oxide catalyzed by 1-butyl-3-methylimidazolium cobalt tetracarbonyl ionic liquid

“…The EO-based route has been most intensively studied, through hydroformylation of EO followed by hydrogenation of the intermediate 3-hydroxypropionaldehyde (3-HPA) or methyl 3-hydroxypropionate (3-HPM) [3,4]. However, the intermediate 3-HPA was unstable and could easily form low polymer and ethylidene ether [5][6][7][8]. The processes for preparing 1,3-PDO from EO by hydrogenation of 3-HPM intermediate in the presence of traditional cobalt compounds catalysts have been studied by many institutes, and although unstable 3-HPA has been avoided, activities and stability of the catalyst and selectivity to 3-HPM were unfavorable [9][10][11][12].…”