Surface Evolution and Optimizing Strategy for Polishing Natural Heterogeneous Marble Using Sol-Gel Diamond Pad
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DOI: 10.3390/app14188314
Abstract: Inefficiency and poor quality are the main problems in polishing natural heterogeneous marbles using sol-gel (SG) diamond pads. A strategy was proposed to address these issues by establishing a natural heterogeneous marble polishing model based… read more here.
Keywords: natural heterogeneous; marble; optimal polishing; gel diamond ... See more keywords
Pumice as a Novel Natural Heterogeneous Catalyst for the Designation of 3,4-Dihydropyrimidine-2-(1H)-ones/thiones under Solvent-Free Conditions
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DOI: 10.3390/molecules27186044
Abstract: In this study, pumice is used as a novel natural heterogeneous catalyst for the synthesis of 3,4-dihydropyrimidine-2-(1H)-ones/thiones via the one-pot multi-component condensation of aromatic aldehydes, urea/thiourea, and ethyl acetoacetate or acetylacetone in excellent yields (up… read more here.
Keywords: ones thiones; natural heterogeneous; dihydropyrimidine ones; catalyst ... See more keywords