John W Mccauley

US Patent:

6610625, Aug 26, 2003

Filed:

Jun 5, 2001

Appl. No.:

09/873355

Inventors:

John McCauley - Finksburg MD

Assignee:

Tricat Industries, Inc. - Hunt Valley MD

International Classification:

B01J 2116

US Classification:

502 68, 502 64, 502 79, 502 84

Abstract:

Catalytic and/or adsorbent compositions are formed with greater flexibility to optimize various properties, such as strength and catalytic activity by employing a synthetic clay binder having a small particle size, e. g. , an average particle size no greater than about 100 nm. Embodiments of the present invention comprise compositions containing a catalytic component and/or adsorbent component and laponite which functions as a binder either alone or with an additional binder component. Embodiments of the present invention further include a catalytic and/or adsorbent composition containing an inorganic binder and laponite as a lubricant to facilitate shaping, as by extrusion.

US Patent:

62842072, Sep 4, 2001

Filed:

Sep 5, 2000

Appl. No.:

9/655027

Inventors:

John R. McCauley - Finksburg MD

International Classification:

B01F 100
B01D 1102

US Classification:

423132

Abstract:

A material with high surface area can be obtained through the partial or total removal of CaO and MgO by acid leaching of blast furnace slag. This is accomplished by an improved process for selective leaching of blast furnace slag and other solid solution materials by control of temperature during leaching, rate of addition of acid, type of the acid, concentration of the acid, and concentration of the slag in the slurry. When these variables are controlled as disclosed a hierarchy of dissolution occurs. The hierarchy begins with MgO, progresses to CaO, and is followed by A1. sub. 2 O. sub. 3, and the rate of acid addition is slow and controlled so that alumina does not dissolve (thereby depriving the remaining silica has no acid sites or catalytic activity). By invoking the hierarchy one gains selectivity, and this can be used to convert blast furnace slag to a material with high surface area which may have applications as an absorbent could be economically feasible. The resulting material is also high in silica-alumina and low in alkali.

US Patent:

20180142047, May 24, 2018

Filed:

May 9, 2016

Appl. No.:

15/572658

Inventors:

- Columbia MD, US
John Robert McCauley - Finksburg MD, US
Andrew G. Singleton - Ellicott City MD, US
Demetrius Michos - Clarksville MD, US

Assignee:

W. R. Grace & Co.-Conn. - Columbia MD

International Classification:

C08F 10/02

Abstract:

Catalyst support-activator for olefin polymerization catalysts, and processes for making, the support-activator comprising an intercalated, modified and calcined smectite clay comprising (a) pillars comprising aluminum and optionally: (i) at least one rare earth or lanthanide group metal; or (ii) at least one rare earth or lanthanide group metal and gallium; and (b) at least one ion-exchanged metal ion selected from the group consisting of aluminum, barium, beryllium, calcium, cerium, cesium, copper, chromium, gadolinium, gallium, germanium, hafnium, holmium, iron (II and III), lanthanum, lithium, magnesium, manganese, neodymium, potassium, praseodymium, rubidium, samarium, silver, selenium, sodium, strontium, tellurium, terbium, thallium, thorium, tin, titanium, uranium, ytterbium, yttrium, zinc and zirconium. The pillared clay exhibits a basal dspacing of: (A) 9 to 18 angstroms; or (B) equal to or greater than about 18.5 angstroms. Use of the modified clays, with metallocene catalyst precursor components, provides active olefin polymerization catalysts, preferably in the substantial absence of aluminoxanes or boron-containing compounds.

US Patent:

20180142048, May 24, 2018

Filed:

May 9, 2016

Appl. No.:

15/572675

Inventors:

- Columbia MD, US
John Robert McCauley - Finksburg MD, US
Andrew G. Singleton - Ellicott City MD, US
Demetrius Michos - Clarksville MD, US

Assignee:

W. R. Grace & Co.-Conn. - Columbia MD

International Classification:

C08F 10/02

Abstract:

An intercalated, modified and calcined smectite clay comprising (a) pillars comprising aluminum and: (i) at least one rare earth or lanthanide group metal; or (ii) at least one rare earth or lanthanide group metal and gallium; and (b) at least one ion-exchanged metal selected from the group consisting of aluminum, barium, beryllium, calcium, cerium, cesium, copper, chromium, gadolinium, gallium, germanium, hafnium, holmium, iron (II and III), lanthanum, lithium, magnesium, manganese, neodymium, potassium, praseodymium, rubidium, samarium, silver, selenium, sodium, strontium, tellurium, terbium, thallium, thorium, tin, titanium, uranium, ytterbium, yttrium, zinc and zirconium; wherein the clay is characterized by a basal dspacing equal to or greater than about 18.5 angstroms; and processes for making. The modified clays are suitably used as catalyst support-activators and when used in combination with metallocene catalyst precursor components, can provide active catalysts for polymerizing at least one olefin, preferably in the substantial absence of aluminoxanes or boron-containing compounds.