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  • Y-type Zeolites

    Y-type Zeolites
    Aug 19, 2019 | ACS MATERIAL LLC

    Dealuminated ultrastable Y zeolites have increasingly attracted attention as good adsorbents and stable acid catalysts. These materials exhibit high thermal and hydrothermal stability, as well as higher catalytic activity than that of aluminum-rich synthesized Y zeolites. The ultrastable Y zeolite (USY) in fluid cracking catalysis is commonly stabilized by ion-exchange with rare earth (RE) cations. These rare earth ultrastable Y zeolites, also known as REUSY, demonstrate how rare earth exchange can provide much needed hydrothermal stability. Introduction Y zeolite (IZA structure, FAU type) is characterized by large, essentially spherical, internal cavities (supercages) linked tetrahed... Read More

  • ZSM-5 Molecular Seive

    ZSM-5 Molecular Seive
    Jul 24, 2019 | ACS MATERIAL LLC

    The ZSM-5 molecular sieve boasts unique and exceptional properties, which are widely employed in important processes and applications across a broad range of industries. Commonly used in converting methanol to gasoline and diesel as well as oil refining, ZSM-5 has proved superior to amorphous solid acid catalysts in reactions such as xylene isomerization, toluene disproportionation and toluene alkylation etc. Upon ion exchange or modification, H-ZSM-5 zeolites can be derived to also possess enhanced para-selectivity. All in all, the high versatility of this zeolite makes it a truly indispensable material across many industries. Introduction The ZSM-5 molecular sieve is a highly siliceo... Read More

  • Type A and X Zeolites

    Type A and X Zeolites
    Jul 16, 2019 | ACS MATERIAL LLC

    Zeolites, also commonly known as molecular sieves, are crystalline microporous materials primarily made up of SiO4 and AlO4 corner-sharing tetrahedral building units. These are grown to form three-dimensional (3D) crystalline frameworks with well-defined channels and cavities of molecular dimensions. In application, their pore openings are utilized to selectively adsorb molecules smaller than the pore size and reject any molecules larger than the pore size. There are many types of zeolites which have been developed for the adsorption of various specific molecule sizes. These various types of zeolites will be discussed further in this blog. Introduction All zeolites serve the purpose ... Read More

  • Titanium Nitride

    Titanium Nitride
    May 13, 2019 | ACS MATERIAL LLC

    Titanium nitride (TiN), an alternative plasmonic material to gold, possesses unique physiochemical properties most notable in plasmonic devices. A compatible material within biological environments and the semiconductor industry, TiN exhibits superior properties to noble metals such as high temperature durability, chemical stability, corrosion resistance, low cost and high mechanical hardness. TiN is widely used in microelectronics, biomedical devices and food-contact applications. It proceeds to sparking great interest in fields such as plasmonic photo-thermal therapy, solar/thermophotovoltaics, heat assisted magnetic recording and plasmon-mediated photocatalysis. Introduction Titaniu... Read More

  • Radio Frequency Technology and Graphene

    Radio Frequency Technology and Graphene
    Mar 11, 2019 | ACS MATERIAL LLC

    Graphene is on the tip of every radio frequency researcher’s tongue and for good reason. Electronic technologies are speeding towards increasingly faster and smaller computing, communication and automation. These advancements have required silicon-based transistors to become more and more miniature. Today’s circuitry is smaller, faster and more efficient than ever before, but it’s widely believed that the drive for smaller and more powerful has a natural technological limit: current materials cannot infinitely get both smaller and faster. To continue on this path, new materials are needed. Enter graphene. Graphene appears to many as an ideal material for use in future electronics... Read More

  • Titanium Dioxide

    Titanium Dioxide
    Feb 28, 2019 | ACS MATERIAL LLC

    TiO2 nanomaterial is notable for its large specific surface area and unique chemical, physical, optical and electronic properties. It is also non-toxic and environmentally friendly in nature and demonstrates excellent biocompatibility and stability. These unique properties make it useful for a wide array of applications including photocatalysis, gas and humidity sensors, water treatment, solar cells, photochemical cells and protective coatings on optical elements. TiO2 is also widely exploited as a pigment providing whiteness and opacity given by its high brightness and very high refractive index. As a pigment TiO2 is used to produce paints, coatings, plastics, papers, inks, foods, too... Read More

  • Black Phosphorus

    Black Phosphorus
    Jan 17, 2019 | ACS MATERIAL LLC

    A two-dimensional (2D) material similar to graphene, Black Phosphorus (BP) has many unique and noteworthy characteristics. The in-plane anisotropy deriving from its puckered orthorhombic structure affords extraordinary electronic, optical, transport, thermal and mechanical properties. Additionally, its high carrier mobility, tunability and moderate direct band gap makes BP a material of choice in electronics and optoelectronics. Furthermore, its biodegradability and biocompatibility makes BP suitable for applications in the biomedical field.14 Introduction Phosphorus, an extraordinary element in group 5A of the periodic table, exists in different allotropic modifications, including whi... Read More

  • Black Titanium Dioxide

    Black Titanium Dioxide
    Jan 16, 2019 | ACS MATERIAL LLC

    Titanium Dioxide (TiO2) nanomaterials have been used primarily as photocatalysts over past few decades, however, its wide band gap largely limited TiO2 activity to the UV region of the solar spectrum. The discovery of ‘‘black’’ titanium dioxide nanoparticles with visible infrared absorption opened up all new possibilities in this sector. Since the discovery of black titanium dioxide, world-wide research initiatives have been launched for the purpose of narrowing the band gap and overcoming that issue. Success in this endeavor could positively affect a wide array of applications in a diverse set of solar energy systems. Introduction In 2011, black TiO2 was (TiO2-x) as reported ... Read More

  • Si/C Composites for Battery Materials

    Si/C Composites for Battery Materials
    Nov 6, 2018 | ACS MATERIAL LLC

    Lithium-ion batteries (LIB’s) are well-suited for fully electric and hybrid electric vehicles due to their high specific energy and energy density in comparison to other rechargeable cell options, however, their suitability depends on the quality of the anode material within. Silicon Carbide (Si/C) composites are a semi conductive material where silicon is highly dispersed within a carbon matrix. Si/C composites exhibit not only acceptable faradaic yield at the first cycle, but also large capacity and good rechargeability. These are essential and highly desirable properties making Si/C composites worth considering for use as anode material within lithium-ion batteries. Introduction... Read More

  • Mordenite Zeolite

    Mordenite Zeolite
    Oct 24, 2018 | ACS MATERIAL LLC

    Mordenite (MOR) is a high-silica molecular sieve with two pore channels. It is synthesized by the hydrothermal method and has been effectively used in the adsorption and separation of gas or liquid mixtures involving acidic components. As a catalyst, mordenite zeolite is used in various important industrial reactions like hydrocracking, hydro-isomerization, alkylation, reforming and cracking. Introduction Mordeniteis a silica-rich, large-pore zeolite that occurs readily in nature. Although mordenite occurs in nature as a mineral, synthetic mordenites are better suited in terms of purity for meeting stringent requirements for adsorption and catalytic processes. The first claim to the ... Read More

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