rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    title: Nghiên cứu điều chế mangan dioxit từ quặng pyrolusit Việt Nam
  title info: title
  name:
    name part: Đinh, Hữu Nhàn
    role:
      role term: creator
  type of resource: text
  origin info:
    place:
      place term: xx
    place:
      place term: Cần Thơ
    publisher: Trường Đại học Cần Thơ
    date issued: 2003
    date issued: 9999
    issuance: monographic
  language:
    language term: und
  physical description:
    form: print
  abstract: Mangan là một nguyên tố hóa học khá phổ biến, chỉ đứng hàng thứ 3 sau sắt và titan. Mangan và các hợp chất của nó đã và đang được sử dụng rộng rãi trong nhiều lĩnh vực. Trong tự nhiên, Mangan dioxit có trong ba lọai khoáng vật: pyrolusit, ramsdellit, akhtenskit. Ở Việt Nam, chỉ riêng nguồng khoáng pyrolusit có đến hàng triệu tấn tập trung ở Cao Bằng, Nghệ an. Mangan dioxit tự nhiên thường lẫn rất nhiều tạp chất và khó có được cấu trúc tinh thể hòan hảo. Với mục tiêu xây dựng một quy trình thích hợp điều chế mangan dioxit có hoạt tính oxi hóa hoặc xúc tác oxi hóa tốt tác giả đã thực hiện đề tài này nhằm sử dụng có hiệu quả hơn nguồn nguyên liệu pyrolusit trong nước để chế tạo các lọai vật liệu MnO2 phục vụ sản xuất và đời sống.
  note: Đinh Hữu Nhàn
  subject:
    topic: Analytical chemistry
  subject:
    topic: Manganese
  classification: 543
  classification: Nh105
  record info:
    record creation date: 210402
    record identifier: CTU_83310