Search results for "sokerit"

showing 3 items of 3 documents

Catalytic effect of transition metals (copper, iron, and nickel) on the foaming and properties of sugar-based carbon foams

2019

Abstract Recently, bio-based carbon foams have gained much interest in many chemical industry fields because of their unique structure and properties. This study provides new information on the effects of catalytic metals (iron, nickel, and copper) on the foaming process. Specifically, the effects of these catalysts on the density, foam growth, and cell size and then further on the pore size distribution and specific surface areas after the physical activation are considered. Furthermore, some of the activated sugar foams were used in adsorption tests using methylene blue as adsorbent. Results showed that the highest effect on foam density was obtained using the iron catalyst in the foaming…

huokoisuusvaahdotSugar foamskatalyytitsokeritporositykatalyysilipids (amino acids peptides and proteins)cardiovascular diseasesfoaming propertiesmetallitphysical activationtransition metals
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Rapid one-step solvent-free acid-catalyzed mechanical depolymerization of pine sawdust to high-yield water-soluble sugars

2017

Abstract One-step absolute solvent-free acid-catalyzed mechanical depolymerization of pine sawdust (PSD) and commercially available α-cellulose to water-soluble sugars was carried out using ball milling. For comparison purposes, the commonly reported “solvent-free” mechanocatalytic depolymerization of lignocellulose method, which normally involves three steps (acid impregnation in solvent, vacuum drying, and mechanical depolymerization of lignocellulose), was performed. The 3,5-dinitrosalicylic acid (DNS) method was used to measure the total reducing sugar (TRS) of the obtained sugar solution, and major monosaccharides in the solution were analyzed by capillary electrophoresis (CE). More th…

hydrolyysisokeritmäntybiomassa020209 energylignin condensationlignin02 engineering and technologychemistry.chemical_compoundHydrolysisAcid-catalyzed mechanical depolymerization[CHIM.ANAL]Chemical Sciences/Analytical chemistryacid-catalyzed mechanical depolymerization0202 electrical engineering electronic engineering information engineeringLigninMonosaccharideOrganic chemistrychromophoresSugarWaste Management and Disposalta215ta218ComputingMilieux_MISCELLANEOUSchemistry.chemical_classificationbiomassRenewable Energy Sustainability and the EnvironmentDepolymerizationHydrolysisligniiniForestryPinus sylvestrisLignin condensationChromophoresReducing sugarSolventsawdustchemistryhydrolysissugarsYield (chemistry)[SDE]Environmental SciencesPine (Pinus sylvestris) sawdustAgronomy and Crop ScienceNuclear chemistrypine
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Acid-catalyzed mechanocatalytic pretreatment to improve sugar release from birch sawdust : Structural and chemical aspects

2022

This study examined acid-catalyzed mechanocatalytic pretreatment of birch sawdust without a separate impregnation step. Catalyst amount and pretreatment time were the key variables. Pretreated material was mixed with water for hydrolysis (100 °C, 60 min). The efficient release of total reducing sugars from birch sawdust is significant to the path towards biofuels and biochemicals. Based on the results, the structure and surface of birch sawdust changed as a function of mechanocatalytic pretreatment. Milling time caused significant transformations in birch structure and also increased the yields of reducing sugars. The highest yield of total reducing sugar from pretreated sawdust was 23.0% a…

koivutsokeritbirchrikkihapposulfuric acidesikäsittelybiojalostamotsawdustsahanpurukatalyytitkatalyysimechanocatalytic pretreatmentball millingbiomassa (teollisuus)jauhatuscatalyst
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