International Paper Company

The International Nickel Company, Inc.

Esb Incorporated

Michael N Hull

Vacheslav M Yasnovsky

Pierre P Turillon

George F Nordblom

William D Clark

John T Arms

Shyam S Bhattacharjee

Madhu P Godsay

An electrochemical process for delignification and bleaching of pulp fibers is disclosed. The process involves the use of metallic chlorates and vanadium catalysts in the presence of an electric current to provide a pulp fiber of improved brightness and viscosity.

Electrochemical process for bleaching wood pulp using chlorate and a

Delignifying bleaching of lignocellulosic materials, particularly wood pulps already partly delignified by conventional alkaline pulping processes by electrochemically generated ferricyanide in the presence of an effective amount of molecular oxygen is disclosed. Attainment of low kappa numbers employing milder temperature and pressure conditions than are employed in conventional oxygen bleaching is made possible and the process may be substituted for at least a portion of the conventional chlorine based bleaching processes which are current industry standard practice for bleaching kraft pulps.

Method of oxygen bleaching with ferricyanide lignocellulosic material

The use of primary and secondary amines and certain other compounds in ferricyanide assisted oxygen delignifying bleaching of lignocellulosic pulps permits more rapid removal of a desired amount of lignin from the pulp and, hence, the retention of higher pulp viscosity.

Process for the delignification of lignocellulosic material with oxygen,

Reductive bleaching of lignin containing pulps employing polydentate ligand complexes of dipositive vanadium, chromium and titanium. High brightness pulps with good reversion stability are obtained. The process is essentially polution free as the reduced complexes can be repeatedly regenerated electrochemically.

Process for the electrochemical reductive bleaching of lignocellulosic

A composite electrode having a structural electrode member with at least a portion of one surface of the electrode member constructed from a continuous matrix of an anodically passivatable metal infiltrated by a metal capable of forming an electroconductive oxide and having the infiltrating metal at the electrode surface oxidized such that an electric current path is provided through the oxidized surface of the matrix metal. In one embodiment the matrix metal is an electrochemical valve metal, e.g., titanium and the infiltrating metal is lead. Applications for the composite electrode include battery grids and electrochemical processing electrodes.

Method of producing battery and electrolytic cell electrodes

Battery and electrolytic cell electrodes

A photoelectrochemical system comprising an n-type photoelectrode, means associated with said photoelectrode for storing charges produced at the interface of the photoelectrode and an electrolyte and a hydrogen storage electrode in contact with a hydrogen-containing electrolyte.

Photoelectrochemical cell with in-situ storage using hydrogen storage

A negative lead-acid storage battery electrode having a base made of a porous, sintered metal lighter than lead infiltrated with lead, lead alloy or a metal wetted by pure lead in the molten state. The base is then provided with a protective layer of pure lead and negative active mass atop the pure lead layer.

Growing community of inventors

Bardonia, NY, United States of America

Michael N Hull