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Working as a Ph.D. student in Department of Industrial Chemistry

was a magnificent as well as challenging experience for me. In all these years, I was exposed to many people who directly or indirectly

were responsible in shaping up my academic career. It was hardly possible for me to thrive in my doctoral work without the precious support of these personalities.

Here is a small tribute to all these people.

First of all, I would like to express my deep and sincere gratitude to

my guide Prof. (Dr.) S. D. Toliwal, Department of Oils, Fats & Waxes (Industrial Chemistry), Institute of Science and Technology for Advance Studies and Research (ISTAR), Sardar Patel University. His

wide knowledge and his logical way of thinking have been of great value for me. His understanding, encouragement and personal guidance have provided a good platform for the present thesis.

I wish to express my warm and sincere thanks to Prof. (Dr.) V.S.Patel, Director of Sophisticated Instrumentation Centre for Applied Research

and Testing (SICART) for his watchful, intimate, keen monitoring and supervision during the entire work related to making of this thesis detailed and constructive comments and their important support

throughout the work.

I wish to express my warm and sincere thanks to Dr. Akshay Gupte and Miss. Anjum Banu (N.V. Patel college of Pure and Applied Science,

Sardar Patel University) for their detailed and constructive comments and his important support through out the work.

I owe my most sincere gratitude to Dr. B.K.De, Dr. Sibban Singh, Dr.A.K.Dighe, Dr. Merlin Thomas, Dr. Jigar Patel, Dr.Tejas Pavagadhi, Dr. Kalpesh Patel and Dr. Chintan Patel (Department of Industrial

Chemistry, Institute of Science and Technology for Advance Studies and Research (ISTAR), Sardar Patel University) who gave me untiring

help during my difficult moments. Their kind support and guidance have been of great value in this study.

My special Thanks to Late Prof. (Dr.) M. N. Desai and Prof (Dr.) Nisha.

K. Shah, professor (Department of Chemistry School of Sciences, Gujarat University) for their valuable inspirational, suggestions and helping me in solving the problems encountered during the corrosion

study.

I am very obliged to Dr. Arvnabh Mishra, Lecturer (Ashok & Rita Patel

Institute of Studies in Biotechnology and Allied Sciences (ARIBAS), Sardar Patel University) for their valuable ideas and suggestions. I would also like to take an opportunity to express my gratitude to

Dr.(Mrs.) Shobha S. Toliwal for her moral support.

I am grateful to Dr. M.R.Tiwari and Mr. Gautam Chauhan, for their analytical assistance, interpretation and discussion of Gas

Chromatography and Spectroscopic analysis.

I am thankful to my seniors Dr. Kalpen Patel, Dr.Jignesh Patel,

Dr.Devang Wadia, Dr. Deepak Mishra and Dr. (Miss.) Shikha Varma for their helping nature and co-operation.

I always keep my collogues, Mr. Darshan Patel, Mr. Ashvin Panchal,

Mr. Tarosh Patel, Mr. Atul Kamble and Mr. Vikramsingh in hearty touch for creating joyful and fantastic environment in the laboratory.

I also wish to thank Mrs. Parul Thakkar (Store keeper), Mr. Hitesh

Soni (Lab.Asst), Mr. Prakash Varadia (Lab.Asst), Mr. Rajni Patel, (Lab.Asst), Mr. Minesh Patel (Lab.Asst), Mr. Chandubhai (Peon), Mr.

Hitesh Machi (Peon), Mr.Rajusinh Rathod (Peon) and Last but not least lots of thanks to other non teaching staff members for providing me some valuable chemicals and their help.

I am deeply grateful to Mr. Jonis Tandel, Mr. Rohit Patel, Mrs. Yavanti Patel and Miss. Kaushika Patel for their unflagging help. Words are not

enough to express my thanks to them but I heartily convey my gratitude to them.

I owe my loving thanks to my friends, Dr. Sagar Patil, Dr. Dipen Patel

Mr. Keyur Patel, Mr. Saurabh Patel, Mr. Nikul Suthar, Mr. Koonal Patel, Mr. Kalpesh Thakar, Mr. Tanmay Patel, Mr. Vardhmansingh, Mr. Jitesh Bhagat, Mr. Ajit Parmar, Mr. Chirag Patel, Mr. Rajesh

Parmar, Miss. Sangeeta Patel, Miss. Avani Pavasiya, Miss. Kirtika Solanki, Miss. Bhumika Bhatt, Miss.Nidhi Verma, Miss. Namita Jha

and Mrs Niketa Suthar for their endless encouragement, moral support and fruitful discussions.

Lastly, what I am just due to my mother, Mrs. Parvatiben and father

Mr. Ganpatsinh Jadav, my uncle Mr. Mayanksinh Parmar, my sisters, Mrs. Tejal Patel and Mrs. Vaishali Patel and my school teachers who always stood behind me and for me to way, to love, to bless, to inspire,

to correct, to punish… in short they were guiding arrows for me and will remain so. I am heartily thankful to my brother, Mr. Vinit Jadav

for his love, affection and concern for my career.

The work in this thesis has been inspiring, often exciting, some time challenging, but always interesting experience so, I am the only

responsible person for the mistakes that might have still managed to escape attention.

Kalpesh G. Jadav