I think that alchemy in general was concerned with matters of transmutation, physical as well as spiritual. And the quest for immortality has been a spark in mankind's eye for about as long as we've been aware of death... so I wouldn't be surprised to see that issue arising in any alchemical school of thought, no matter its point of origin. Although, I don't know if there was an "Egyptian alchemy" per se- I think that alchemy was a Western/European reaction to a collection of spiritual/metaphysical/scientific lines of reasoning, some of which we are told originated in Egypt.
3nodding Ishilied, I've another book to add to your wish list, and this one may be more relevant to your subject.
The Secret Lore of Egypt: Its Impact on the West by Erik Hornung deals specifically with the impact of Egyptian mysticism- where it correlates with genuine Egyptian traditions and teachings, where it does not, and the development of both lines of thinking into the modern day. Erik Hornung is a very well-studied and well-respected Egyptologist, and I've found most of his books extremely informative and interesting. You can trust any of his books as a source.
What a shame that it's too late for your paper! But this is an interesting subject, definitely worthy of study on its own terms.^_^
You don't necessarily have to buy these books to read them- check with your public library about their Inter-Library Loan system (ILL). Libraries routinely borrow books from other libraries when their patrons wish to read something which they do not have on their own shelves. All you have to do is fill out a request form, and they will find a library who owns a copy of that book and have it mailed in. In my experience, librarians are quite happy to help you with the process- after all, they've devoted their entire livelihood to books. They'd love to see more people reading.
wink You should be able to get all the information you need for the form from the Amazon.com links I've been giving.