当前位置:文档之家› (完整word版)《催化剂工程》期末考试试题

(完整word版)《催化剂工程》期末考试试题

(完整word版)《催化剂工程》期末考试试题
(完整word版)《催化剂工程》期末考试试题

《催化剂工程》期末考试试题

一、单项选择题(每小题3分,共18分)

1.在化学反应中,催化剂不能够()

(A)改变反应速度(B)改变反应热力学平衡位置(C)保持颗粒形态(D)参与反应物之间的化学反应2.经过焙烧后的催化剂多数尚未具备催化活性,必须用氢气或其他还原性气体还原成为活泼的金属或低价氧化物,这步操作称为催化剂的()

(A)浸渍(B)活化(C)预处理(D)成型3.某催化反应的单程收率(亦称得率)Y与其转化率X和选择性S的关系是()

(A)Y=S/X(B)Y=X-S (C)Y=X/S (D)Y=XS 4.经离子交换法制成的各种分子筛衍生物的Br nsted酸性顺序正确的是()

(A)H型 < La型(B) Mg型> Ca型(C)Sr型 < Ba型(D)Ba型> Mg型5.最早实现沸石择形催化的分子筛是()

(A)ZSM-1 (B)ZSM-3 (C)ZSM-5 (D)ZSM-7 6. 以()聚合方法合成的各种聚烯烃已是世界上比例最大的聚合物产品,其中()的产量占首位.

(A)配位、聚乙烯(B)配位、聚丙烯

(C)自由基引发、聚乙烯

二、填空题(每小题2分,共26分)

7.催化剂从小试鉴定到开发成果的稳定工业化之间,还有一段不短的历程.

8. 纳米催化材料的一般制备方法涉及催化剂的、和的制备.

9.催化剂性能及其应用主要取决于复杂的和 .

10.分子筛形状选择性分为选择性、选择性和选择性三类.

11.工业催化剂的寿命随而异,各类寿命大不相同.

12.反应气体在催化剂表面上以进行化学吸附时,其反应活性最好.

13.固定床催化剂装填最重要的要求是保持降均匀.

14.在第四代聚丙烯催化剂制备工艺中,控制是关键技术

三、简答题(共38分)

15.试述纳米催化材料的几种一般制备方法.(9分)

16.一种好的工业催化剂应该满足哪些基本要求?(8分)

17. 纳米材料物理性能的特点归纳为哪些效应?(12分)

18.试述纳米催化材料的几种一般制备方法.(9分)

四、分析题(共18分)

19.以N2和H2为给料气可以通过不同途径合成NH3,该反应具体过程的可能势能图如下图所示。

由此图回答下列问题(18分):

(i)催化过程与非催化过程相比,哪个过程更能使合成氨实现工业化生产?(2分)为什么?(6分)

(ii)催化剂改变反应历程意味着什么结果?(10分)

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