نتایج جستجو برای: iranian natural zeolites
تعداد نتایج: 524536 فیلتر نتایج به سال:
light is one of the many wonders in the architecture iranian houses. it is a major tool for space creation anddesign. an important consideration in the iranian architecture, which takes a functional and conceptual approach to the extensive subject of light, has been that light should create a beautiful and spiritual space in addition to being functional. the light used in a house should be plea...
The applicability of clinoptilolite zeolites in controlling the emission greenhouse gases (GHGs) such as CO2, most significant GHG, is investigated herein. In this research, Mexican natural (ATN) originating from an Atzinco deposit state Puebla were used. Samples modified (ATH4, ATH3, ATH2 and ATH1) obtained starting material by acid treatment various intensities. Inverse gas chromatography was...
BACKGROUND The presence of hair plays an important role in people's overall physical appearance and self-perception. As a result of increased life expectancy, the desire to look youthful plays a bigger role than ever.The use of medicinal plants is as old as mankind and the market will face many new products containing natural oils and herbs in coming years. In traditional Iranian medicine, many...
The encapsulation of metal clusters (Pt, Ru, Rh) within MFI was achieved by exchanging cationic metal precursors into a parent zeolite (BEA, FAU), reducing them with H2 to form metal clusters, and transforming these zeolites into daughter structures of higher framework density (MFI) under hydrothermal conditions. These transformations required MFI seeds or organic templates for FAU parent zeoli...
Heck reactions were performed with 4-bromoacetophenone and n-butyl acrylate, yielding the trans-arylated acrylate ester with high selectivity. Pd–zeolite catalysts were compared with supported Pd metal catalysts. In order to obtain an active and heterogeneous catalyst, the preformed or in situ-formed catalytically active Pd0 species and the PdII intermediates must be sufficiently stabilized on ...
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