famine四种等离子形态净化技术

离子体中可源源不断地产生大量极活泼的高活性物种，

这在

普通的热化学反应中不易得到，这些活性物种

(

特别 是高能

电子

)

含有巨大的能量，可以引 发位于等离子体附近的催化

剂，

并可降低反应的活化能。同时，

催化剂还可选择性地促

进等离子体产生的副产物反应，

得到无污染的物质。

但是目

前国内外在等离子体 和催化协同作用机理方面的分析和研

究比较少，在这方面的认识还远远不够。

Low

temperature

plasma

and

catalytic

synergy

processing

waste

gas

in

the

main

principle

of

the

plasma can be continuously produced a large number of

highly reactive species extremely lively, it is not

easy to get in the common thermal chemical reaction,

these

active

species

(especially

high

energy

electron)

contains

vast

amounts

of

energy,

can

trigger

near

plasma catalyst, and

can reduce the activation

energy

of

reaction.

At

the

same

time,

the

catalyst

can

selectively

promote

plasma

by-product

generated

in

the

reaction,

non-pollution

material.

But

at

home

and

abroad

in

the

plasma

and

catalytic

mechanism

of

synergy

of

less

analysis

and

research,

in

this

respect

knowledge is not enough.

有学者认为，

固 相催化剂的活性是由它们的化学和物相

组成，

晶体结构以及活性 比表面所决定。

在等离子体的作用

下，催化剂表面将形成超细颗 粒

(

平均颗粒直径为

5-500nm< /p>

，

比表面约为

100 m2/g)

，这将大大增加催化剂的比表面积，

并且破坏催化剂的晶体结构，钢塑 土工格栅拥有更多的空

穴，

从而导致高的催化活性。相比普通的 催化剂，等离子体

作用后的催化剂有如下独特之处：

①具有高度 分布的活性物

种，

②能耗减少，③加强了催化剂的活性和选择性 ，

延长了

催化剂寿命；④缩短 了制备时间。另外，

等离子体的作用可

促进催化剂中的组分均匀 分布，

降低对毒物的敏感程度。

这

些特 性将使得等离子体—催化技术有更大的应用前景。

The

scholar

thinks,

the

activity

of

solid

catalyst

is by their chemical and phase composition, crystal

structure

and

surface

activity

than

the

decision.

Under the action of plasma and catalyst surface will

form

ultrafine

particles

(average

particle

diameter

of

5-500

-

nm,

specific

surface

is

about

100

m2

/

g),

which

will greatly increase the specific surface area of

catalyst,

and

damaging

the

catalyst

crystal

structure,

it

has

more

holes,

leading

to

high

catalytic

activity.

Compared with the ordinary catalyst, catalyst after

the plasma function has the following unique: 1) a

highly

distributed

active

species,

(2)

to

reduce

energy

consumption,

(3)

strengthen

the

catalyst

activity and selectivity, extend the service life of

the catalyst; (4) to shorten the preparation time. In

addition,

the

role

of

the

plasma

can

promote

the

catalyst

is

uniform

distribution,

reduce

the

sensitivity

of

poison.

These

features

will

make

plasma