Glass frit

Cells need not necessarily contain a reference electrode to obtain meaningfiil results as an example, if the two electrodes in figure A2.4.12 are made from the same metal, M, but these are now in contact with two solutions of the same metal ions, M but with differing ionic activities, which are separated from each other by a glass frit that pennits contact, but impedes diffusion, then the EMF of such a cell, temied a concentration cell, is given by... 

In order to describe any electrochemical cell a convention is required for writing down the cells, such as the concentration cell described above. This convention should establish clearly where the boundaries between the different phases exist and, also, what the overall cell reaction is. It is now standard to use vertical lines to delineate phase boundaries, such as those between a solid and a liquid or between two innniscible liquids. The junction between two miscible liquids, which might be maintained by the use of a porous glass frit, is represented by a single vertical dashed line, j, and two dashed lines, jj, are used to indicate two liquid phases... 

Glass-filled PPS Glass films Glass frit Glass frits Glass hollow fibers Glassine... 

Other small molecule species decompose and volatilise. The glass frit fuses, wetting the surface of the functional phase, providing adhesion and sealing of the composite to the substrate. Because of the screen printing process, resolution is modest. Fired film thicknesses, which range from 10 to 50 p.m (0.4 to 2.0 mils), are large compared to thin-fHm microelectronics. Some photosensitive pastes are also ia use. 

After the molten glass has become a homogeneous Hquid, it is poured in a thin stream into water or between closely spaced, water-cooled rotating metal rollers. This quenched glass, termed frit, is a friable material easily reduced to small-sized particles by a ball-milling operation. Ball-milling the glass frit into small-sized particles can be carried out whether the frit is to be used wet or dry (see Size reduction). 

Standard two-compartment H cell. The catholyte consisted of 3.25 M nitric acid and was separated by a medium-porosity sintered glass frit. Experiments were also carried out to determine if surface oxidation of hydrocarbon polymers could be obtained in an electrolyte consisting only of nitric acid. 

Vitrification processes are being developed in several countries in which the dried waste is calcined and heated with ground glass frit to produce a borosilicate glass which can be stored or disposed of more permanently if there is agreement on suitable sites. 

Enhanced anti-corrosion properties are also reportedly achieved by mill additions of lithium titanate, lithium aluminate or magnesium titanate to the host glass frit . 

N-Methylimidazole is then removed from the reaction mixture with Amberlyst 15 ion exchange resin (Note 9) using the following procedure. To a 2-cm diameter column equipped with a glass frit (Note 1) is added 7 g of Amberlyst 15, which is rinsed with 25 mL of methylene chloride. The reaction mixture is added and the resin mixture is rinsed with 50 mL of methylene chloride. The filtrate is collected in a 250-mL flask (Note 10) and the solvent is removed on a rotary evaporator to afford 1.63-1.66 g (96-98%) of the desired ester 1 as a deep red foam. HPLC analysis showed a purity of 98% (Notes 11, 12, 13, 14). 

The separator is frequently a sintered glass frit, but it may also be any of a wide range of inert, porous materials such as celloton, vycor or porvic or an ion exchange membrane. A number of stable ion exchange membranes suitable for use in aqueous and non-aqueous solvents have become available in recent years. 

The checkers found that the maintenance of a flow of oxygen during the cooling period prevented clogging of the glass frit and a building up of pressure in the gas-inlet tube in their apparatus. 

The salt (an intermediate in the preparation of l,4,5,8-tetrahydro-l,4,5,8-tetrathiafulvalene) exploded violently during removal from a glass frit with a Teflon-clad spatula [1]. Previous references to the salt exploding at 250°C [2] or melting at... 

The complex sometimes explodes when scraped against a glass frit with a metal spatula. 

A small sample exploded when scraped with a metal spatula on a glass frit. 

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