Glycine-nitrate process

YDC has been prepared by various methods, including solid-state reaction, coprecipitation, glycine-nitrate process and metal organic chemical vapor deposition (MOCVD). Table 1.4 shows that the properties depend on the preparation method [118,119,127,129,130], Zha et al. [129] have studied the influence of sintering... [Pg.38]

As shown in Figures 1.36(a) and 1.36(b), the glycine nitrate process-derived powder is highly porous. The pore size ranges from tens of nanometers to several micrometers. The powder is thus named as foam powder, which shows extremely low fill densities of less than 1/100 of the theoretical density value. The low fill density makes it possible to prepare thin films of doped ceria by dry pressing, in which the films are processed by means of punches in a hardened metal die. Figures 1.36(c) and 1.36(d) show a cross-sectional view of an 8 /tm-thick GDC film fabricated by dry pressing. [Pg.46]

FIGURE 1.37 The Arrhenius plot of Ce08Sm0i2Oli9 from different methods (A) solid-state reaction [95] (B) sol-gel process [116] (C) oxalate coprecipitation [91] (D) carbonate coprecipitation, our work and (E) glycine-nitrate process [157]. [Pg.48]

Yang YJ, Wen T-L, Tu H, Wang D-Q, and Yang J. Characteristics of lanthanum strontium chromite prepared by glycine nitrate process. Solid State Ionics 2000 135 475 t79. [Pg.207]

The glycine/nitrate process (GNP) is a self-combustion method using glycine as fuel and the nitrates of metal components of the material to be synthesized as oxidant, which can prepare a high specific surface powder with single phase composition in very short time. It is especially appropriate for the fabrication of multi-component system such as doped perovskite compounds [11]. Moreover, this process is easily operated and cost-effective. [Pg.168]

In this paper, we report the preparation of Sr- and Mn-doped lanthanum gallate powders (Lao.gSro.iGai.xMnxOs, x=0.2, 0.35, 0.43) by a glycine nitrate process. The electrical properties of sintered pellets from as-prepared powders at different atmospheres, as well as their chemical stability under H2 atmosphere were characterized. [Pg.168]

Small batches ( 10 g) of powders were prepared by the glycine-nitrate process (GNP) [5], Appropriate amounts of metal salts (barium-, cerium-, yttrium-, and zirconyl nitrates, ammonium cerium [IV] nitrate, and barium acetate were [Alfa Aesar, Ward Hill, MA]) and glycine were dissolved in deionized water. The solution was heated on a hot plate in a stainless steel beaker until a sufficient amount of solvent had evaporated allowing the precursor to ignite. The resulting ash was sieved (100-mesh) and calcined for 20 min to 30 min at 1,200°C to produce the desired single-phase perovskite. Additional material was obtained commercially (Praxair). The following compositions were synthesized ... [Pg.84]

Birol H, Rambo CR, Guiotoku M, Hotza D (2013) Preparation of ceramic nanoparticles via cellulose-assisted glycine nitrate process a review. Rsc Adv 3 2873-2884... [Pg.188]

Valefi M, Palamaki C, Ebadzadeh T, Hashjin MS (2007) New insights of the glycine-nitrate process for the synthesis of nano-crystalline 8YSZ. J Am Ceram Soc 90 2008—2014... [Pg.188]

Kim GD, Park JA, Lee EIL, Lee DA, Moon JW, Kim JD (1999) Synthesis and sintering of BaTiOs powders by the glycine-nitrate process using metal caibonate and alkoxide. J Ceram Soc Jpn 107 691-696... [Pg.188]

Wang Z, Yang B, Fu Z, Dong W, Yang Y, Liu W (2005) UV-blue photoluminescence from Zr02 nanopowders prepared via glycine nitrate process. Appl Phys a-Mater Sci Process... [Pg.188]

Lei LW, Fu ZY, Wang H, Lee SW, Nuhara K (2012) Transparent yttria stabilized zirconia from glycine-nitrate process by spark plasma sintering. Ceram Int 38 23-28... [Pg.188]

Kikukawa, N., Takemori, M., Nagano, Y., Sugasawa, M., Kobayashi, S. Synthesis and magnetic properties of nanostructured spinel ferrites using a glycine-nitrate process. J. Magn. [Pg.365]

The glycine nitrate process is one of a general class of combustion methods for the preparation of ceramic powders. A highly viscous mass formed by evaporation of a solution of metal nitrates and glycine is ignited to produce the powder (101). Glycine, an amino acid, forms complexes with the metal ions in solution which... [Pg.108]

When compared to the Pechini method, grinding and calcination of the product are not required. The very fine size and crystalline nature of the powder is believed to be a direct result of the short exposure to high temperatures during the ignition step. With adequate process control, the glycine nitrate process offers a relatively inexpensive route to the preparation of very fine, chemically homogeneous powders. It has been used for the preparation of simple oxides as well as complex oxides (e.g., manganites, chromites, ferrites, and oxide superconductors). [Pg.109]

For the application as SOFC cathodes, samples with small and homogeneous particle sizes are usually preferred. As a consequence, the glycine-nitrate process was considered a more appropriate technique for preparing the perovskite samples of this series Lno.5Ao.5Fe03 5 (Ln= La, Nd, Sm A= Ba, Sr) with 1.25< <1.34 A. [Pg.494]

Liu, B. Zhang, Y. (2008). Bao.5Sro.5Coo.8Feo.2Q3 Nanopowders Prepared by Glycine-nitrate Process for Solid Oxide Fuel Cell Cathode. Journal of Alloys and Compounds, Vol. 453, No. (1-2), (April 2008), pp. 418 22, ISSN 0925-8388... [Pg.503]

Blennow P, Hansen KK, Wallenberg LR, Mogensen M (2007) Synthesis of nb-doped SrTi03 by a modified glycine-nitrate process. J Eur Ceram Soc 27 3609-3612... [Pg.74]

The sintered density of samples derived from citric acid-nitrate or glycine-nitrate processes was in the range of 94-97% fi om the theoretical one, while urea, as fuel, led to more compact structures with a density of only 90% that theoretically predicted. [Pg.291]

Keywords CuCr02, glycine-nitrate process, surface area... [Pg.194]

Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...