Title: Method and composition for reducing nitrates, nitrites, and/or hydroxylamine in water using a homogeneous reduced copper tetra-substituted fluorinated pinacolate ligand catalyst complex

Abstract

A method for reducing nitrates, nitrites, and/or hydroxylamine in water using a homogeneous reduced copper tetra-substituted fluorinated pinacolate ligand catalyst complex. The method includes dissolving a copper(II) tetra-substituted fluorinated pinacolate ligand pre-catalyst complex in water having an excess amount of nitrates, nitrites, and/or hydroxylamine therein. The dissolved copper(II) tetra-substituted fluorinated pinacolate ligand pre-catalyst complex in the water is subjected to electrochemical reduction to form a homogeneous reduced copper tetra-substituted fluorinated pinacolate ligand catalyst complex. The homogeneous reduced copper tetra-substituted fluorinated pinacolate ligand catalyst complex reduces the nitrates, nitrites, and/or hydroxylamine in the water to compounds with nitrogen in a lower oxidation state with the homogeneous reduced copper tetra-substituted fluorinated pinacolate ligand catalyst complex.

Inventors:

Doerrer, Linda H.; Hannigan, Steven F.; Tahsini, Laleh; Kotyk, Christopher M.

Issue Date:

2020-01-21

Research Org.:

Boston Univ., MA (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1632457

Patent Number(s):

10538439

Application Number:

15/545,088

Assignee:

Trustees of Boston University (Boston, MA)

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY

C - CHEMISTRY C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE C02F - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

Show more

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY

B01J2231/70 - Oxidation reactions, e.g. epoxidation,
B01J2531/16 - Copper
B01J31/1625 - {immobilised by covalent linkages, i.e. pendant complexes with optional linking groups}
B01J31/1633 - {covalent linkages via silicon containing groups}
B01J31/223 - {At least two oxygen atoms present in one at least bidentate or bridging ligand}
B01J37/348 - {Electrochemical processes, e.g. electrochemical deposition or anodisation}

C - CHEMISTRY C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE C02F - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

C02F1/4676 - {by electroreduction}
C02F1/4678 - {of metals}
C02F1/70 - by reduction {
C02F1/705 - {Reduction by metals}
C02F2101/16 - Nitrogen compounds, e.g. ammonia
C02F2101/163 - {Nitrates}
C02F2101/166 - {Nitrites}
C02F2103/007 - {Contaminated open waterways, rivers, lakes or ponds}
C02F2103/06 - Contaminated groundwater or leachate

Show less

DOE Contract Number:  

FG02-11ER 16253

Resource Type:

Patent

Resource Relation:

Patent File Date: 01/29/2016

Country of Publication:

United States

Language:

English

Subject:

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY