Helena Wachowska: search on Z-Library

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1

Preparation of Nitrogen-Enriched Activated Carbons from Brown Coal

Pietrzak, Robert, Wachowska, Helena, Nowicki, Piotr

Journal:

Year:

2006

Language:

english

File:

PDF, 84 KB

english, 2006

2

X-ray photoelectron spectroscopy study of oxidized coals with different sulphur content

Teresa Grzybek, Robert Pietrzak, Helena Wachowska

Journal:

Fuel Processing Technology

Year:

2002

Language:

english

File:

PDF, 94 KB

english, 2002

3

Oxidation studies on coking coal related to weathering. 4. Oxygen linkages influencing the dilatometric properties and the effect of cleavage of ether linkages

Helena M. Wachowska, Biswanath N. Nandi, Douglas S. Montgomery

Journal:

Year:

1974

Language:

english

File:

PDF, 948 KB

english, 1974

4

Microscopic studies of semi-coke from different macerals after treatment of the coal in K/THF/naphthalene

Biswanath N. Nandi, Helena M. Wachowska, Douglas S. Montgomery

Journal:

Year:

1974

Language:

english

File:

PDF, 590 KB

english, 1974

5

Effect of Heteroatoms on Lithium Insertion into Carbons

Frackowiak, Elzbieta, Wachowska, Helena

Journal:

Molecular Crystals and Liquid Crystals Science and Technology Section A Molecular Crystals and Liquid Crystals

Year:

2000

Language:

english

File:

PDF, 319 KB

english, 2000

6

Reductive alkylation of coals in ether solvents

Helena Wachowska, Mieczyslaw Kozlowski

Journal:

Year:

1994

Language:

english

File:

PDF, 739 KB

english, 1994

7

Multistage butylation of coals in a potassium-liquid ammonia system

Helena Wachowska, Mieczysław Kozłowski

Journal:

Year:

1993

Language:

english

File:

PDF, 939 KB

english, 1993

8

Structural studies of coal extracts

Helena Wachowska, Antoni Andrzejak, Jacek Thiel

Journal:

Year:

1985

Language:

english

File:

PDF, 701 KB

english, 1985

9

Sorption properties of active carbons obtained from walnut shells by chemical and physical activation

Piotr Nowicki, Robert Pietrzak, Helena Wachowska

Journal:

Catalysis Today

Year:

2010

Language:

english

File:

PDF, 615 KB

english, 2010

10

Microbial desulfurization of coal with Thiobacillus ferrooxidans bacteria

Anna Juszczak, Florian Domka, Mieczysław Kozłowski, Helena Wachowska

Journal:

Year:

1995

Language:

english

File:

PDF, 560 KB

english, 1995

11

XPS study of pyrite-free coals subjected to different oxidizing agents

Robert Pietrzak, Teresa Grzybek, Helena Wachowska

Journal:

Year:

2007

Language:

english

File:

PDF, 263 KB

english, 2007

12

Atmospheric-Pressure Temperature-Programmed Reduction Study of High-Sulfur Coals Reduced in a Potassium/Liquid Ammonia System

Kozłowski, Mieczysław, Wachowska, Helena, Yperman, Jan, Franco, Dirk V., Mullens, Jules, Van Poucke, Lucien C.

Journal:

Year:

1998

Language:

english

File:

PDF, 177 KB

english, 1998

13

Reduction and reductive alkylation of coals using deuterium containing compounds

Mieczysław Kozłowski, Helena Wachowska

Journal:

Year:

1998

Language:

english

File:

PDF, 871 KB

english, 1998

14

E.p.r. searches of correlations between paramagnetic centre behaviour and chemical structure of reductively alkylated flame coal

Barbara Pilawa, Andrzej B. Więckowski, Helena Wachowska, Mieczysław Kozłowski

Journal:

Year:

1998

Language:

english

File:

PDF, 237 KB

english, 1998

15

The effect of flame coal oxidation on the solid and soluble products of its extraction

Robert Pietrzak, Helena Wachowska, Piotr Nowicki

Journal:

Central European Journal of Chemistry

Year:

2005

Language:

english

File:

PDF, 576 KB

english, 2005

16

Studies of reduction and reductive alkylation of coals in the potassium/liquid ammonia system. 1. The influence of demineralization on the course of reduction and reductive alkylation of coals

Helena Wachowska, Mieczysław Kozłowski

Journal:

Year:

1995

Language:

english

File:

PDF, 1.06 MB

english, 1995

17

Active carbons prepared by chemical activation of plum stones and their application in removal of NO2

Piotr Nowicki, Helena Wachowska, Robert Pietrzak

Journal:

Journal of Hazardous Materials

Year:

2010

Language:

english

File:

PDF, 412 KB

english, 2010

18

Studies of reduction and reductive alkylation of coals in the potassium/liquid ammonia system. 2. Characterization of coal extracts

Helena Wachowska, Mieczysław Kozłowski

Journal:

Year:

1995

Language:

english

File:

PDF, 578 KB

english, 1995

19

Microwave saturation of EPR spectra of oxidised coal

Barbara Pilawa, Andrzej B. Więckowski, Robert Pietrzak, Helena Wachowska

Journal:

Central European Journal of Chemistry

Year:

2007

Language:

english

File:

PDF, 254 KB

english, 2007

20

Siberian anthracite as a precursor material for microporous activated carbons

Piotr Nowicki, Robert Pietrzak, Helena Wachowska

Journal:

Year:

2008

Language:

english

File:

PDF, 87 KB

english, 2008

21

The influence of oxidation with air in comparison to oxygen in sodium carbonate solution on the surface composition of coals of different ranks

Teresa Grzybek, Robert Pietrzak, Helena Wachowska

Journal:

Year:

2006

Language:

english

File:

PDF, 209 KB

english, 2006

22

Studies of the soluble part of oxidised coals

Robert Pietrzak, Mieczysław Kozłowski, Helena Wachowska, Jan Yperman

Journal:

Central European Journal of Chemistry

Year:

2004

Language:

english

File:

PDF, 701 KB

english, 2004

23

Comparison of Physicochemical Properties of Nitrogen-enriched Activated Carbons Prepared by Physical and Chemical Activation of Brown Coal

Nowicki, Piotr, Pietrzak, Robert, Wachowska, Helena

Journal:

Year:

2008

Language:

english

File:

PDF, 66 KB

english, 2008

24

E.p.r. study of reduced and reductively ethylated coals

Stanisław Duber, Helena M. Wachowska, Andrzej B. Wiȩckowski

Journal:

Year:

1987

Language:

english

File:

PDF, 390 KB

english, 1987

25

Application of non-reductive alkylation in liquid ammonia to studies on macromolecular structure of coals and bitumen-derived asphaltene

Helena Wachowska, Teresa Ignasiak, Otto P. Strausz, Denis Carson, Boleslaw Ignasiak

Journal:

Year:

1986

Language:

english

File:

PDF, 453 KB

english, 1986

26

Reductive alkylation of coals in liquid ammonia

Helena Wachowska, Antoni Andrzejak, Mieczysław Kozłowski

Journal:

Fuel Processing Technology

Year:

1988

File:

PDF, 604 KB

1988

27

Multistage reduction of coals in the potassium/liquid ammonia system

Helena Wachowska, Mieczysław Kozłowski

Journal:

Year:

1995

Language:

english

File:

PDF, 822 KB

english, 1995

28

Chemical structure of coals as indicated by reductive alkylation

Helena Wachowska

Journal:

Year:

1979

Language:

english

File:

PDF, 607 KB

english, 1979

29

1H and 13C n.m.r. spectral characteristics of aliphatic component of coal extracts

Jacek Thiel, Helena Wachowska

Journal:

Year:

1989

Language:

english

File:

PDF, 498 KB

english, 1989

30

Effect of cleavage of ether linkages on physicochemical properties of coals

Helena Wachowska, Wanda Pawlak

Journal:

Year:

1977

Language:

english

File:

PDF, 494 KB

english, 1977

31

Effect of coal oxidation on molecular weight of low-temperature tar

Helena Wachowska, Wanda Pawlak

Journal:

Year:

1977

Language:

english

File:

PDF, 222 KB

english, 1977

32

Oxidation of demineralized coal and coal free of pyrite examined by EPR spectroscopy

Barbara Pilawa, Andrzej B. Więckowski, Robert Pietrzak, Helena Wachowska

Journal:

Year:

2002

Language:

english

File:

PDF, 128 KB

english, 2002

33

The influence of oxidation with HNO3 on the surface composition of high-sulphur coals: XPS study

Robert Pietrzak, Helena Wachowska

Journal:

Fuel Processing Technology

Year:

2006

Language:

english

File:

PDF, 554 KB

english, 2006

34

Influence of the Precursor Metamorphism Degree on Preparation of Nitrogen-enriched Activated Carbons by Ammoxidation and Chemical Activation of Coals

Nowicki, Piotr, Pietrzak, Robert, Wachowska, Helena

Journal:

Year:

2009

Language:

english

File:

PDF, 1.16 MB

english, 2009

35

The effect of acid treatment on dilatometric properties of coal

Helena Wachowska, Wanda Pawlak, Antoni Andrzejak

Journal:

Year:

1983

Language:

english

File:

PDF, 419 KB

english, 1983

36

Composition of extraction products from alkylated high-sulphur coals

Mieczysław Kozłowski, Helena Wachowska, Jan Yperman

Journal:

Central European Journal of Chemistry

Year:

2003

Language:

english

File:

PDF, 350 KB

english, 2003

37

Studies of the effects of O-alkylation on the extractability of demineralized and reduced Polish coals

Helena Wachowska, Mieczysław Kozłowski, Jacek Thiel, Ilona Dunajska-Szopka

Journal:

Fuel Processing Technology

Year:

1991

Language:

english

File:

PDF, 409 KB

english, 1991

38

Chemical structure of coal macerals in Balmer 10 coal and fusinite from Illinois coal as indicated by reductive alkylation

Helena M. Wachowska, Biswanath N. Nandi, Douglas S. Montgomery

Journal:

Year:

1979

Language:

english

File:

PDF, 923 KB

english, 1979

39

X-ray Photoelectron Spectroscopy Study of Nitrogen-Enriched Active Carbons Obtained by Ammoxidation and Chemical Activation of Brown and Bituminous Coals

Nowicki, Piotr, Pietrzak, Robert, Wachowska, Helena

Journal:

Year:

2010

Language:

english

File:

PDF, 1.16 MB

english, 2010

40

The influence of oxidation with nitric acid on the preparation and properties of active carbon enriched in nitrogen

Robert Pietrzak, Piotr Nowicki, Helena Wachowska

Journal:

Applied Surface Science

Year:

2009

Language:

english

File:

PDF, 630 KB

english, 2009

41

Ammoxidation of brown coals for supercapacitors

Krzysztof Jurewicz, Krzysztof Babeł, Artur Ziółkowski, Helena Wachowska, Mieczysław Kozłowski

Journal:

Fuel Processing Technology

Year:

2002

Language:

english

File:

PDF, 106 KB

english, 2002

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