Nghiên cứu tổng hợp xúc tác dị thể siêu acid cố định trên các chất mang Al-SBA-15 và ZSM-5/SBA-15 ứng dụng trong phản ứng tổng hợp fructone - 16

NHỮNG ĐÓNG GÓP MỚI CỦA LUẬN ÁN

1. Chế tạo được vật liệu siêu acid HPA cố định trên chất mang mao quản trung bình biến tính Al-SBA-15 và chất mang đa mao quản ZSM-5/SBA-15. Đây là các chất mang có diện tích bề mặt lớn, có khả năng gắn kết các phân tử HPA trên bề mặt để tăng sự tiếp xúc của các tâm acid với các chất phản ứng, đồng thời vẫn duy trì được lực acid của HPA (không ảnh hưởng đến tính siêu acid của HPA).

2. HPA được cố định trên các chất mang Al-SBA-15 and ZSM-5/SBA-15 qua tương tác với các nhóm NH4+, Cs+ tạo ra vật liệu có lực và tâm acid mạnh, độ bền gắn kết HPA tốt, độ bền hoạt tính cao. Vật liệu này được sử dụng làm xúc tác acid hiệu quả trong phản ứng tổng hợp fructone có chất phản ứng phân cực.

3. Nghiên cứu so sánh với các xúc tác acid đồng thể như acid sulfuric, acid p-toluenesulfonic, acid HPA không gắn trên chất mang cho thấy, các hệ xúc tác dị thể HPA/Al-SBA-15 và HPA/ZSM-5/SBA-15 tổng hợp được có hoạt tính xúc tác tốt hơn các acid đồng thể và có thể thu hồi tái sử dụng nhiều lần. Do đó, các vật liệu này có khả năng trở thành xúc tác dị thể thay thế cho các xúc tác acid đồng thể ứng dụng trong các phản ứng tổng hợp hữu cơ có chất phản ứng phân cực.

DANH MỤC CÁC CÔNG TRÌNH ĐÃ CÔNG BỐ

1. Thi Hanh Truong, Van Cuong Do, Ngoc Mai Do, Tran Quang Hung, Huan Van Doan, Thi Nhiem Nguyen, Thi Hai Doan, Thi Hoai Nam Le, Tuyen Van Nguyen, Long Giang Bach, Quang Vinh Tran, Study on the HPA immobilisation on Al- SBA-15 support over Brønsted groups, Molecular Catalysis, 2019, 478, 110571. (Q1, IF = 3.687)

2. Quang Vinh Tran, Thi Hanh Truong, Tran Quang Hung, Huan V. Doan, Xuan Nui Pham, Nam Thi Hoai Le, Long Giang Bach & Van Tuyen Nguyen, Preparation and testing of ceasium Brønsted ion-exchanged Al-SBA-15 supported heteropoly acid as heterogeneous catalyst in the fructone fragrancy synthesis, Journal of Porous Materials, 2020, 27(6), 1745-1754. (Q2, IF = 2.183)

3. Truong Thi Hanh, Do Van Cuong, Do Ngoc Mai, Nguyen Thi Nhiem, Doan Thi Hai, Le Thi Hoai Nam and Tran Quang Vinh, Preparation of 12- phosphotungstic acid immobilized on ZSM-5/SBA-15 support for Fructone fragrancy synthesis, Vietnam Journal of Catalysis and Adsorption, 2019, 8 (2), 99-107.

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• Nghiên cứu tổng hợp xúc tác dị thể siêu acid cố định trên các chất mang Al-SBA-15 và ZSM-5/SBA-15 ứng dụng trong phản ứng tổng hợp fructone - 17

Xem toàn bộ 144 trang tài liệu này.

4. Do Van Cuong, Truong Thi Hanh, Do Ngoc Mai, Nguyen Thi Nhiem, Doan Thi Hai, Le Thi Hoai Nam and Tran Quang Vinh, Nghiên cứu ảnh hưởng của dạng ion bù trừ điện tích khung mạng đến khả năng giữ acid 12- phosphotungstic trên vật liệu Al-SBA-15 và ứng dụng làm xúc tác cho phản ứng tổng hợp chất tạo hương Fructon, Vietnam Journal of Catalysis and Adsorption, 2019, 8(3), 08-15.

5. Trương Thị Hạnh, Đỗ Văn Cường, Đỗ Ngọc Mai, Nguyễn Thị Nhiệm, Đoàn Thị Hải, Trần Quang Hưng, Lê Thị Hoài Nam và Trần Quang Vinh, Nghiên cứu chế tạo và so sánh hoạt tính của vật liệu xúc tác dị đa acid được cố định trên các vật liệu vô cơ mao quản Al-SBA-15 và ZSM-5/SBA-15 trong phản ứng tổng hợp chất tạo hương fructon, Tạp chí Hóa học, 2019, 57 (6E1,2), 174- 178.

6. Đỗ Văn Cường, Trương Thị Hạnh, Đỗ Ngọc Mai, Nguyễn Thị Nhiệm, Đoàn Thị Hải, Lê Thị Hoài Nam và Trần Quang Vinh, Nghiên cứu chế tạo xúc tác HPA cố định trên chất mang Al-SBA-15 được trao đổi ion với Cs+ cho phản ứng tổng hợp chất tạo hương Fructon, Tạp chí Hóa học, 2019, 57 (6E1,2), 179- 183.

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